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Objectives: To determine the impact of adjuvant therapy on oncologic outcomes in patients with 2009 International Federation of Gynecology and Obstetrics (FIGO) stage IA, IB, or II endometrial clear cell carcinoma (ECCC)., Methods: We conducted a retrospective review at 4 international institutions. Patients with newly diagnosed clinical stage I or II disease of either clear cell or mixed histology with a clear cell component treated between 01/01/2000-12/31/2015 were included. Oncologic outcomes were assessed for patients based on adjuvant treatment received, including chemotherapy, radiation, or chemotherapy with radiation., Results: Of 125 patients identified and analyzed, 77 (61.6%) had clear cell histology and 118 (94.4%) had stage I disease. Median age at diagnosis was 65 years (range, 33-91). All patients underwent hysterectomy, bilateral salpingo-oophorectomy, and lymph node assessment. Twenty-five patients (20.0%) underwent surgical management alone and 100 (80.0%) received adjuvant therapy: 20 (16.0%) received postoperative chemotherapy, 47 (37.6%) received postoperative radiation, and 33 (26.4%) received postoperative chemotherapy with radiation. Median follow-up was 88.4 months (range, <1-234). Progression-free survival (PFS) or overall survival (OS) did not significantly differ between surgery alone and type of adjuvant therapy (P = 0.18 and P = 0.56, respectively). Patients with mixed ECCC did not have a survival advantage over those with pure ECCC (5-year PFS rate, 85.0% vs 82.7%, P = 0.77; 5-year OS rate, 88.3% vs 91.2%, P = 0.94)., Conclusions: Receipt of adjuvant therapy in surgically staged I/II ECCC did not appear to offer a survival advantage over observation alone. Adjuvant therapy in early-stage ECCC with consideration of molecular classification should be evaluated., Competing Interests: Declaration of competing interest Dr. Leitao reports personal fees from Medtronic, Intuitive Surgical, J&J/Ethicon, and Immunogen. Dr. Abu-Rustum reports research funding paid to the institution from GRAIL. Dr. Eriksson reports speaker fees from Intuitive Surgical and AstraZeneca. Dr. Makker reports unpaid consulting/advisory roles with the following: Duality, Novartis, Morphosys, AstraZeneca, Eisai, Clovis Oncology, Karyopharm Therapeutics, GlaxoSmithKline, Merck, ArQule, Cullinan, Faeth Therapeutics, Jazz, Immunocore, Iteos Therapeutics, Ideaya, Kartos Therapeutics, Lilly, Moreo, Prelude, Takeda, and Zymeworks; research funding from the following: Merck (Inst), Eisai (Inst), AstraZeneca (Inst), Clovis Oncology (Inst), Bayer (Inst), Takeda (Inst), Duality (Inst), Zymeworks (Inst), Karyopharm Therapeutics (Inst), Faeth Therapeutics (Inst), Bristol-Myers Squibb (Inst), Lilly (Inst), and Cullinan (Inst); travel, accommodations, and expenses from the following: Eisai, Merck, AstraZeneca; and a relationship with IBM. Dr. du Bois reports honoraria/expenses from Amgen, AstraZeneca, BIOCAD, Clovis, GSK/Tesaro, Roche, and Zodiac; and consulting/advisory board role for Amgen, AstraZeneca, BIOCAD, Clovis, Genmab/Seattle Genetics, GSK/Tesaro, MSD, Roche, Pfizer. The other authors do not have potential conflicts of interest to declare., (Copyright © 2024 Elsevier Inc. All rights reserved.)

Objective: To assess clinicopathologic features and survival outcomes of patients with endometrial carcinoma involving adnexal, full-thickness serosal, or combined involvement., Methods: This international, multi-institutional, retrospective study examined patients with 2009 International Federation of Gynecology and Obstetrics (FIGO) stage IIIA endometrial cancer and tumors involving the uterine serosa and/or adnexa, who were surgically staged between 2000 and 2019. Patients with sarcoma histology, concurrent endometrial/ovarian malignancy, neoadjuvant treatment, positive lymph nodes, or peritoneal disease were excluded., Results: Of 185 patients identified, 139 had tumors with adnexal-only, 40 with serosal-only, and six with combined adnexal/serosal involvement. Median age at diagnosis was 60 years (range 23-89). Among tumors of endometrioid histology, 12 (48%) with serosal-only and 17 (19%) with adnexal-only involvement were FIGO grade 3 (p=0.007). Twenty-three tumors with serosal-only (64%) and 50 with adnexal-only (37%) involvement had lymphovascular invasion (p=0.004). Non-endometrioid histology was present in five tumors (83%) with combined adnexal/serosal, 15 (38%) with serosal-only, and 50 (36%) with adnexal-only involvement.Median follow-up was 77 months (range 0.6-254). Five-year progression-free survival and overall survival rates for all patients with stage IIIA disease were 73.8% (SE 3.5%) and 81.0% (SE 3.1%), respectively. For patients with adnexal-only, serosal-only, and combined adnexal/serosal involvement, 5-year progression-free survival rates were 80% (SE 3.8%), 61% (SE 8.3%), and 33% (SE 19.2%), respectively (p<0.01); 5-year overall survival rates were 85% (SE 3.3%), 70% (SE 7.8%), and 60% (SE 21.9%), respectively (p=0.09). On univariate analysis, tumors having serosal involvement with/without adnexal involvement, non-endometrioid histology, and lymphovascular invasion were significantly associated with progression. On multivariate analysis, tumors having serosal involvement with/without adnexal involvement remained significantly associated with recurrence (adjusted HR=2.2, 95% CI 1.2 to 4.3; p=0.01)., Conclusions: Patients with 2009 FIGO stage IIIA endometrial cancer have distinct survival outcomes depending upon adnexal and/or serosal involvement. Progression-free survival was worse for patients with serosal involvement after adjusting for histology, adjuvant treatment, and lymphovascular space invasion., Competing Interests: Competing interests: ML reports personal fees from Medtronic, Intuitive Surgical, J&J/Ethicon, and Immunogen. NRA-R reports research funding paid to the institution from GRAIL. AGE reports speaker fees from Intuitive Surgical and AstraZeneca. DZ reports institutional research support from AstraZeneca, Merck, Plexxikon, Synthekine, and Genentech; consulting fees from AstraZeneca, Synthekine, Astellas, Tessa Therapeutics, Memgen, Celldex, Crown Biosciences, Hookipa Biotech, Kalivir, Xencor, and GSK; royalties from Merck; and stock options from Accurius Therapeutics, ImmunOS Therapeutics, and Calidi Biotherapeutics, all outside the submitted work. The other authors do not have potential conflicts of interest to declare., (© IGCS and ESGO 2024. No commercial re-use. See rights and permissions. Published by BMJ.)

Objective: To examine the risk of sentinel lymph node (SLN) metastases in apparent uterine-confined endometrial cancer (EC) using molecular classification with clinicopathologic features and assess oncologic outcomes by molecular subtypes with micro- or macro-metastases in SLN., Methods: Patients undergoing surgical staging for presumed uterine-confined EC of any histology, with successful bilateral SLN mapping were included. Primary tumors were assigned molecular subtypes using a published algorithm. SLN pathology was categorized as negative, isolated tumor cells (ITCs), or micro- or macro-metastases., Results: Overall, 756 patients were included; 80 (10 %) had micro- or macro-metastases and 51 (7 %) had ITCs. On multivariate multinomial logistic regression, risk of micro- or macro-metastases versus negative SLN was higher for ECs with copy number-high (CN-H)/TP53abn (OR 3.1; 95 % CI 1.3-7), lymphovascular space invasion ([LVSI]; OR 8.0; 95 % CI 4-16), and deep myoinvasion (≥50 %; OR 3.33; 95 % CI 1.9-6.04). Three-year PFS rates by subtype for 68 patients with macro-metastases were 38 % (95 % CI 10-67 %) CN-low/no specific molecular subtype (CN-L/NSMP), 66 % (95 % CI 44-82 %) microsatellite instability-high (MSI-H), and 23 % (95 % CI 10-40 %) CN-H/TP53abn (p = 0.006). Three-year OS rates were 55 % (95 % CI 20-80 %) CN-L/NSMP, 83 % (95 % CI 61-93 %) MSI-H, and 55 % (95 % CI 34-71 %) CN-H/TP53abn (p = 0.048)., Conclusions: Integrating molecular subtype with uterine risk factors (LVSI and myoinvasion) further stratifies risk of occult SLN metastases in patients undergoing surgical staging for early-stage EC. No molecular subgroup had exceedingly low SLN metastases detected, supporting continued universal SLN assessment. Patients with macro-metastases and CN-L/NSMP or CN-H/TP53abn EC had worse outcomes than those with MSI-H EC., Competing Interests: Declaration of competing interest Dr. Weigelt reports funding by REPARE Therapeutics, and employment of an immediate family member at AstraZeneca, outside the submitted work. Dr. Momeni-Boroujeni reports consulting work at Scorpion Therapeutics. Dr. Leitao reports personal fees from Medtronic, Intuitive Surgical, J&J/Ethicon, and Immunogen. Dr. Abu-Rustum reports research funding paid to the institution from GRAIL. The other authors do not have potential conflicts of interest to declare. Funding Research reported in this publication was supported in part by a Cancer Center Support Grant of the NIH/NCI (Grant No. P30CA008748). B. Weigelt is funded in part by Cycle for Survival and Breast Cancer Research Foundation grants. C. Dagher was supported in part by the Bobst Foundation., (Copyright © 2024 Elsevier Inc. All rights reserved.)

Objective: We assessed the prognosis and molecular subtypes of early stage endometrioid endometrial cancer with isolated tumor cells within sentinel lymph nodes (SLNs) compared with node negative disease., Methods: Patients diagnosed with stage IA, IB, or II endometrioid endometrial cancer and primary surgical management were identified from January 1, 2007 to December 31, 2019. All SLNs underwent ultrastaging according to the institutional protocol. Patients with cytokeratin positive cells, micrometastases, and macrometastases were excluded. Clinical, pathology, and molecular subtype data were reviewed., Results: Overall, 1214 patients with early stage endometrioid endometrial cancer met the inclusion criteria, of whom 1089 (90%) had node negative disease and 125 (10%) had isolated tumor cells. Compared with node negative disease, the presence of isolated tumor cells had a greater association with deep myometrial invasion, lymphovascular space invasion, receipt of adjuvant therapy, and adjuvant chemotherapy with or without radiation (p<0.01). There was no significant difference in survival rates between patients with isolated tumor cells and node negative disease (3 year progression free survival rate 94% vs 91%, respectively, p=0.21; 3 year overall survival rate 98% vs 96%, respectively, p=0.45). Progression free survival did not significantly differ among patients with isolated tumor cells who received no adjuvant therapy or chemotherapy with or without radiation (p=0.31). There was no difference in the distribution of molecular subtypes between patients with isolated tumor cells (n=28) and node negative disease (n=194; p=0.26). Three year overall survival rates differed significantly when stratifying the entire cohort by molecular subtype (p=0.04)., Conclusions: Patients with isolated tumor cells demonstrated less favorable uterine pathologic features and received more adjuvant treatment with similar survival compared with patients with nodenegative disease. Among the available data, molecular classification did not have a significant association with the presence of isolated tumor cells, although copy number-high status was a poor prognostic indicator in early stage endometrioid endometrial cancer., Competing Interests: Competing interests: BW reports research support by Repare Therapeutics, outside of the current work. CAA reports clinical trial funding paid to the institution from AstraZeneca; funding paid to the institution from BMS and SELLAS Life Sciences Group; consulting fees (advisory board) from Eisai/Merck, Roche/Genentech, Abbvie, AstraZeneca/Merck, and Repare Therapeutics; advisory board participation (no fee) for Blueprint Medicine; and leadership/fiduciary roles for the GOG Foundation Board of Directors (travel cost reimbursement) and NRG Oncology Board of Directors (unpaid). DZ reports institutional grants from Genentech, AstraZeneca, BMS, SELLAS Life Sciences Group, and Plexxikon; personal fees from Genentech, AstraZeneca, Xencor, Memgen, Synthekine, Celldex, and Hookipa; and stock options from Immunos, Accurius, Mana Therapeutics, and Calidi Biotherapeutics, outside of the submitted work. DZ is also an inventor on a patent related to the use of oncolytic Newcastle disease virus for cancer therapy. YLL reports research funding from AstraZeneca, GSK, and Repare Therapeutics. NRA-R reports research funding paid to the institution from GRAIL. ML reports research funding paid to the institution from KCI/Acelity, ad-hoc speaker for Intuitive Surgical, and advisory board participation for JnJ/Ethicon and Takeda. VM reports advisory board participation (unpaid) for Eisai, Merck, Clovis, Faeth, Duality, Morphyes, Karyopharm, Novartis, Lilly, and Immunocore. CFF reports participation in the scientific advisory boards for Merck (LYNK-002) and Genentech (MyPathway) without compensation, consulting for Seagen and Bristol Myers Squibb, and institutional research funds from Genentech/Roche, Bristol Myers Squibb, Merck, AstraZeneca, and Daiichi. SC serves as a consultant for AstraZeneca., (© IGCS and ESGO 2024. No commercial re-use. See rights and permissions. Published by BMJ.)

On February 6th, 2024, Gynecologic Oncology Reports and the Society of Gynecologic Oncology Education Committee co-hosted a webinar about ways to use social media for career enhancement and for dissemination of research. During the discussion, we reviewed:i.how to identify one's goals, target audience, and select a social media platform.ii.how to navigate the negatives of social media.iii.how to develop one's online academic brand.iv.how to use social media for academic promotion and career advancement.v.how to use social media as a research tool.vi.how to use visual tools to bring attention to one's research.The objective of this report is to review the literature on social media in oncology and review the webinar presentation., Competing Interests: The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Dr. Teplinsky receives compensation from Meta. The remaining authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2024 The Author(s).)

Objectives: To investigate the association of molecular and pathologic factors with concurrent or recurrent ovarian disease to guide ovarian preservation in endometrioid endometrial cancer., Methods: Patients with endometrial cancer ≤50 years of age at diagnosis were grouped by elective oophorectomy versus ovarian preservation at staging (January 2010 to June 2021). Tumors were stratified by molecular sub-type and CTNNB1 mutational status with next generation sequencing and immunohistochemistry. Germline data identified patients with Lynch syndrome. Associations between molecular/pathologic features and concurrent ovarian disease in patients electing oophorectomy were compared with the Wilcoxon rank-sum and Fisher's exact tests. Associations with isolated ovarian recurrences in patients who chose ovarian preservation were examined using survival analyses., Results: Among 317 patients with endometrial cancer who underwent bilateral oophorectomy, 27 (9%) had malignant ovarian tumors, of whom 11 (41%) had no gross ovarian involvement on intra-operative survey. For patients with sequencing, concurrent malignant ovarian tumors were diagnosed in 0/14 (0%) POLE , 2/48 (4%) copy number-low/no specific molecular profile, 10/22 (45%) microsatellite instability-high, and 3/6 (50%) copy number-high/ TP53 abnormal patients (p<0.001). Concurrent malignant ovarian tumors were present in 1/30 (3%) hotspot CTNNB1 -mutated versus 10/60 (17%) wildtype/ CTNNB1 non-hotspot mutated endometrial cancer patients (p=0.11) and 7/28 (25%) Lynch versus 7/74 (9%) non-Lynch syndrome patients (p=0.06). Concurrent malignant ovarian tumors were present in patients with higher grade endometrial cancer (5% grade 1 vs 20% grade 2 and 24% grade 3; p<0.001), present versus absent lymphovascular space invasion (20% vs 6%; p=0.004), positive versus negative pelvic washings (28% vs 7%; p=0.016), and ≥50% versus <50% myoinvasion (24% vs 7%; p=0.004). Of 103 patients who chose ovarian preservation, four had isolated ovarian recurrences (two had high-risk pathologic features and two had high-risk molecular features)., Conclusions: The integration of molecular and pathologic data may improve risk stratification of pre-menopausal patients with endometrial cancer and enhance candidate selection for ovarian preservation., Competing Interests: Competing interests: Outside the submitted work, NRA-R reports research funding paid to the institution from GRAIL. Memorial Sloan Kettering Cancer Center also has equity in GRAIL. ML reports personal fees from Medtronic, Intuitive Surgical, J&J/Ethicon, and Immunogen. BW reports research funding from Repare Therapeutics, outside of the current work. The other authors have no potential conflicts of interest to disclose., (© IGCS and ESGO 2024. No commercial re-use. See rights and permissions. Published by BMJ.)

Background: Racial disparities in outcomes exist in endometrial cancer (EC). The contribution of ancestry-based variations in germline pathogenic variants (gPVs) is unknown., Methods: Germline assessment of ≥76 cancer predisposition genes was performed in patients with EC undergoing tumor-normal Memorial Sloan Kettering Cancer Center Integrated Mutation Profiling of Actionable Cancer Targets sequencing from January 1, 2015 through June 30, 2021. Self-reported race/ethnicity and Ashkenazi Jewish ancestry data classified patients into groups. Genetic ancestry was inferred from Memorial Sloan Kettering Cancer Center Integrated Mutation Profiling of Actionable Cancer Targets. Rates of gPV and genetic counseling were compared by ancestry., Results: Among 1625 patients with EC, 216 (13%) had gPVs; 15 had >1 gPV. Rates of gPV varied by self-reported ancestry (Ashkenazi Jewish, 40/202 [20%]; Asian, 15/124 [12%]; Black/African American (AA), 12/171 [7.0%]; Hispanic, 15/124 [12%]; non-Hispanic (NH) White, 129/927 [14%]; missing, 5/77 [6.5%]; p = .009], with similar findings by genetic ancestry (p < .001). We observed a lower likelihood of gPVs in patients of Black/AA (odds ratio [OR], 0.44; 95% CI, 0.22-0.81) and African (AFR) ancestry (OR, 0.42; 95% CI, 0.18-0.85) and a higher likelihood in patients of Ashkenazi Jewish genetic ancestry (OR, 1.62; 95% CI; 1.11-2.34) compared with patients of non-Hispanic White/European ancestry, even after adjustment for age and molecular subtype. Somatic landscape influenced gPVs with lower rates of microsatellite instability-high tumors in patients of Black/AA and AFR ancestry. Among those with newly identified gPVs (n = 114), 102 (89%) were seen for genetic counseling, with lowest rates among Black/AA (75%) and AFR patients (67%)., Conclusions: In those with EC, gPV and genetic counseling varied by ancestry, with lowest rates among Black/AA and AFR patients, potentially contributing to disparities in outcomes given implications for treatment and cancer prevention., Plain Language Summary: Black women with endometrial cancer do worse than White women, and there are many reasons for this disparity. Certain genetic changes from birth (mutations) can increase the risk of cancer, and it is unknown if rates of these changes are different between different ancestry groups. Genetic mutations in 1625 diverse women with endometrial cancer were studied and the lowest rates of mutations and genetic counseling were found in Black and African ancestry women. This could affect their treatment options as well as their families and may make disparities worse., (© 2023 American Cancer Society.)

Objectives: To investigate the association of molecular subtype with progesterone response in patients with endometrial cancer (EC) or atypical endometrial hyperplasia (AEH)., Methods: Premenopausal patients aged ≤48 years with tumor-normal sequencing data who received progesterone for EC/AEH from 1/1/2010-6/30/2021 were identified. Tumors were classified as POLE-ultramutated, microsatellite instability-high (MSI-H), copy number-high (CN-H), or copy number-low (CN-L) molecular subtype. Best response to progesterone was compared by subtype. Appropriate statistical tests were performed., Results: Of 20 patients, 7 (35%) had AEH and 13 (65%) had EC. Sixteen tumors (80%) were CN-L, 3 (15%) were MSI-H, and 1 (5%) was POLE-ultramutated. Median time on progesterone was 22 months (range, 3-115). Ten patients (50%) had complete response (CR); median time to CR was 9 months (range, 3-32). Four patients (20%) had stable disease (SD) and 6 (30%) had progressive disease (PD). For CN-L tumors, 10 patients (62%) had CR, 3 (19%) had SD, and 3 (19%) had PD. For MSI-H tumors, 1 patient (33%) had SD and 2 (66%) had PD. For POLE-ultramutated tumors, 1 patient had PD. Median follow-up was 48 months (range, 12-123). Four of 10 patients (40%) with CR recurred; median time from CR to recurrence was 16 months (range, 5-102)., Conclusion: Molecular subtype may be associated with progesterone response in patients with EC/AEH. CN-L tumors had the best response, and MSI-H tumors had the poorest. Recurrence after CR is common, and close surveillance is warranted. Larger studies investigating the role of molecular classification in medical management of EC/AEH are needed., Competing Interests: Declaration of Competing Interest B. Weigelt reports research funding by Repare Therapeutics, outside the scope of the current study. M. M. Leitao Jr. reports being an ad hoc speaker for Intuitive Surgical, Inc., has consulted for Medtronic, and has served on the advisory boards of Ethicon/Johnson & Johnson and Immunogen. N. R. Abu-Rustum reports grant funding from GRAIL paid to the institution. The other authors have no potential conflicts of interest to disclose., (Copyright © 2023 Elsevier Inc. All rights reserved.)

Objective: To compare clinical and pathologic characteristics of women with surgical stage I endometrial carcinoma by location of first recurrence and describe characteristics of isolated vaginal recurrence., Methods: Patients with 2009 International Federation of Obstetrics and Gynecology (FIGO) stage I endometrial carcinoma treated at two large cancer centers from 1/1/2009-12/31/2017 were identified. Sarcoma histology was excluded. Recurrences were grouped into isolated vaginal or extravaginal. Isolated vaginal recurrences were localized by anatomic location within the vaginal vault. Clinical and pathologic variables were compared with chi-square analysis, and Kaplan-Meier curves with log-rank tests., Results: Of 2815 women identified, 278 (10%) experienced a recurrence. Sixty-one patients (2%) had an isolated vaginal recurrence, including 42 (69%) at the vaginal apex; 217 (8%) had an extravaginal recurrence, including 18 with a vaginal component. Median time to recurrence was 11 months (range, 1-68) for isolated vaginal recurrence and 20 months (range, 1-98) for extravaginal recurrence (P < .004). Of 960 patients (34%) treated with adjuvant vaginal brachytherapy (VBT), 156 (16%) recurred; 19 (2%) had an isolated vaginal recurrence, including 16 (84%) at the vaginal apex. Three-year PFS rates for isolated vaginal recurrence were 97.6% (SE ± 0.4%) with minimally invasive surgery (MIS) versus 96.9% (SE ± 1.1%) with open (P = .8), and for extravaginal recurrence were 91.8% (SE ± 0.7%) with MIS versus 90.8% (SE ± 1.8%) with open (P = .8)., Conclusions: Isolated vaginal recurrences in stage I endometrial cancer are detected earlier than non-vaginal recurrences. Surgical approach does not appear to impact recurrence. Adjuvant VBT after primary surgery carries a 1%-2% risk of isolated vaginal apex recurrence., Competing Interests: Declaration of Competing Interest Outside the submitted work, N.R. Abu-Rustum reports Stryker/Novadaq and GRAIL grants paid to the institution. V. Makker reports meeting/travel support by Eisai and Merck; participation on a Data Safety Monitoring or Advisory Board of Duality, Merck, Karyopharm, Exelexis, Eisai, Karyopharm, BMS, Clovis, Faeth Immunocore, Morphosys, AstraZeneca, Novartis, GSK, Bayer (all unpaid), and study support to the institution by Merck, Eisai, AstraZeneca, Faeth, Karyopharm, Zymeworks, Duality, Clovis, Bayer, and Takeda. M.M. Leitao Jr. reports research funding paid to the institution from KCI/Acelity, ad-hoc speaker for Intuitive Surgical, Inc., and advisory board participation for JnJ/Ethicon and Takeda. Y. Lakhman serves as a consultant for Calyx Clinical Trial Solutions. A. Jhingran reports a consulting agreement and advisory board participation with Genentech, and a patent (adaptive intracavitary brachytherapy applicator for cervical cancer). The other authors do not have potential conflicts of interest to declare., (Copyright © 2023 Elsevier Inc. All rights reserved.)

Objective: To assess the clinicopathologic, molecular profiles, and survival outcomes of patients with endometrial carcinomas (ECs) harboring telomerase reverse transcriptase (TERT) hotspot mutations or gene amplification., Methods: ECs harboring somatic TERT promoter hotspot mutations or gene amplification (TERT-altered) were identified from 1944 ECs that underwent clinical tumor-normal sequencing from 08/2016-12/2021. Clinicopathologic variables, somatic mutation profiles, and survival outcomes of TERT-alt and TERT-wild-type EC were assessed., Results: We identified 66 TERT-altered ECs (43 TERT-mutated and 23 TERT-amplified), representing 3% of the unselected ECs across histologic subtypes. Most TERT-altered ECs were of copy number (CN)-high/TP53abn molecular subtype (n = 40, 60%), followed by microsatellite-unstable (MSI-H) or CN-low/no specific molecular profile (NSMP)(n = 13, 20% each). TERT-amplified and TERT-mutated ECs were molecularly distinct, with TERT-amplified ECs being more genomically instable and more frequently harboring TP53 and PPP2R1A alterations (q < 0.1). Compared to TERT-wild-type ECs, TERT-altered ECs were more commonly of CN-H/TP53abn molecular subtype (31% vs 57%, p = 0.001), serous histology (10% vs 26%, p = 0.004), and were significantly enriched for TP53, CDKN2A/B, and DROSHA somatic genetic alterations (q < 0.1). Median progression-free survival was 18.7 months (95% CI 11.8-not estimable [NE]) for patients with TERT-altered EC and 80.9 months (65.8-NE) for patients with TERT-wild-type EC (HR 0.33, 95% CI 0.21-0.51, p < 0.001). Similarly, median overall survival was 46.7 months (95% CI 30-NE) for TERT-altered EC patients and not reached for TERT-wild-type EC patients (HR 0.24, 95% CI 0.13-0.44, p < 0.001)., Conclusion: TERT-altered ECs, although rare, are enriched for CN-high/TP53abn tumors, TP53, CDKN2A/B and DROSHA somatic mutations, and independently predict worse survival outcomes., Competing Interests: Declaration of Competing Interest N.R. Abu-Rustum reports Stryker/ Novadaq and GRAIL grants paid to the institution, outside the current study. B. Weigelt reports a research grant from REPARE Therapeutics paid to the institution, outside the submitted work. C. Aghajanian reports clinical trial funding paid to the institution from AstraZeneca; consulting fees (advisory board) from Eisai/Merck, Roche/Genentech, Abbvie, AstraZeneca/Merck, and Repare Therapeutics; advisory board participation (no fee) for Blueprint Medicine; and leadership/fiduciary roles for the GOG Foundation Board of Directors (travel cost reimbursement) and NRG Oncology Board of Directors (unpaid). The remaining authors have no conflicts of interest to declare., (Copyright © 2023 Elsevier Inc. All rights reserved.)

Although the incidence of endometrial carcinoma (EC) is similar in Black and White women, racial disparities are stark, with the highest mortality rates observed among Black patients. Here, analysis of 1,882 prospectively sequenced ECs using a clinical FDA-authorized tumor-normal panel revealed a significantly higher prevalence of high-risk histologic and molecular EC subtypes in self-identified Black (n = 259) compared with White (n = 1,623) patients. Clinically actionable alterations, including high tumor mutational burden/microsatellite instability, which confer benefit from immunotherapy, were less frequent in ECs from Black than from White patients. Ultramutated POLE molecular subtype ECs associated with favorable outcomes were rare in Black patients. Results were confirmed by genetic ancestry analysis. CCNE1 gene amplification, which is associated with aggressive clinical behavior, was more prevalent in carcinosarcomas occurring in Black than in White patients. ECs from Black and White patients display important differences in their histologic types, molecular subtypes, driver genetic alterations, and therapeutic targets., Significance: Our comprehensive analysis of prospectively clinically sequenced ECs revealed significant differences in their histologic and molecular composition and in the presence of therapeutic targets in Black versus White patients. These findings emphasize the importance of incorporating diverse populations into molecular studies and clinical trials to address EC disparities. This article is featured in Selected Articles from This Issue, p. 2293., (©2023 American Association for Cancer Research.)

Competing Interests: Competing interests: None declared.

With the advancement of diagnostic molecular technology and the molecular classification of endometrial endometrioid carcinoma (EEC), it remains to be seen whether conventional International Federation of Gynecology and Obstetrics (FIGO) grading retains clinical significance in certain molecular subtypes of EECs. In this study, we explored the clinical significance of FIGO grading in microsatellite instability-high (MSI-H) and POLE-mutant EECs. A total of 162 cases of MSI-H EECs and 50 cases of POLE-mutant EECs were included in the analysis. Significant differences in tumor mutation burden (TMB), progression-free survival, and disease-specific survival were seen between the MSI-H and POLE-mutant cohorts. Within the MSI-H cohort, there were statistically significant differences in TMB and stage at presentation across FIGO grades, but not survival. Within the POLE-mutant cohort, there was significantly greater TMB with increasing FIGO grade, but there were no significant differences in stage or survival. In both the MSI-H and POLE-mutant cohorts, log-rank survival analysis showed no statistically significant difference in progression-free and disease-specific survival across FIGO grades. Similar findings were also seen when a binary grading system was utilized. Since FIGO grade was not associated with survival, we conclude that the intrinsic biology of these tumors, characterized by their molecular profile, may override the significance of FIGO grading., (Copyright © 2023 United States & Canadian Academy of Pathology. Published by Elsevier Inc. All rights reserved.)

Purpose: Using next generation sequencing (NGS), The Cancer Genome Atlas (TCGA) found that endometrial carcinomas (ECs) fall under one of four molecular subtypes, and a POLE mutation status, mismatch repair (MMR) and p53 immunohistochemistry (IHC)-based surrogate has been developed. We sought to retrospectively classify and characterize a large series of unselected ECs that were prospectively subjected to clinical sequencing by utilizing clinical molecular and IHC data., Experimental Design: All patients with EC with clinical tumor-normal MSK-IMPACT NGS from 2014 to 2020 (n = 2115) were classified by integrating molecular data (i.e., POLE mutation, TP53 mutation, MSIsensor score) and MMR and p53 IHC results. Survival analysis was performed for primary EC patients with upfront surgery at our institution., Results: Utilizing our integrated approach, significantly more ECs were molecularly classified (1834/2115, 87%) as compared to the surrogate (1387/2115, 66%, p < 0.001), with an almost perfect agreement for classifiable cases (Kappa 0.962, 95% CI 0.949-0.975). Discrepancies were primarily due to TP53 mutations in p53-IHC-normal ECs. Of the 1834 ECs, most were of copy number (CN)-high molecular subtype (40%), followed by CN-low (32%), MSI-high (23%) and POLE (5%). Histologic and genomic variability was present amongst all molecular subtypes. Molecular classification was prognostic in early- and advanced-stage disease, including early-stage endometrioid EC., Conclusions: The integration of clinical NGS and IHC data allows for an algorithmic approach to molecularly classifying newly diagnosed EC, while overcoming issues of IHC-based genetic alteration detection. Such integrated approach will be important moving forward given the prognostic and potentially predictive information afforded by this classification., Competing Interests: Conflicts of interest N.R. Abu-Rustum reports Stryker/Novadaq and GRAIL grants paid to the institution, outside the current study. C.F. Friedman reports institutional research support from Seagen, Merck, BMS, AstraZeneca, Mersana and Hotspot Therapeutics; consulting fees from BMS, Seagen and Aadi Biosciences; honoraria for lectures from Onclive; meeting/ travel support by Puma; participation on Data Safety Monitoring or Advisory Board of Merck, Genentech and Marengo (all uncompensated). D. Zamarin reports institutional research support from AstraZeneca, Merck, Plexxikon Synthekine and Genentech; consulting fees from AstraZeneca, Synthekine, Astellas, Tessa Therapeutics, Memgen, Celldex, Crown Biosciences, Hookipa Biotech, Kalivir, Xencor and GSK; royalties from Merck; and stock options from Accurius Therapeutics, ImmunOS Therapeutics and Calidi Biotherapeutics, all outside the submitted work. V. Makker reports meeting/travel support by Eisai and Merck; participation on Data Safety Monitoring or Advisory Board of Duality, Merck, Karyopharm, Exelexis, Eisai, Karyopharm, BMS, Clovis, Faeth Immunocore, Morphosys, AstraZeneca, Novartis, GSK, Bayer (all unpaid), and study support to the institution by Merck, Eisai, AztraZeneca, Faeth, Karyopharm, Zymeworks, Duality, Clovis, Bayer and Takeda. Y. Liu reports institutional research funding from Repare Therapeutics, AstraZeneca and GSK; honoraria from Total Health and Sarah Lawrence College; and travel/meeting support by AstraZeneca, outside the submitted work. B. Weigelt reports a research grant from REPARE Therapeutics paid to the institution, outside the submitted work. D.S. Chi reports personal fees from Apyx Medical, Verthermia Inc., Biom ‘Up, and AstraZeneca, as well as recent or current stock/options ownership of Apyx Medical, Verthemia, Intuitive Surgical, Inc., TransEnterix, Inc., Doximity, Moderna, and BioNTech SE. E.L. Jewell reports personal fees from Covidien/Medtronic. M. M. Leitao is an ad hoc speaker for Intuitive Surgical, Inc.; outside the submitted work, he is on the Advisory Board of Ethicon/Johnson & Johnson and Takeda; and reports grants paid to the institution by KCI/Acelity. C. Aghajanian reports clinical trial funding paid to the institution from AstraZeneca; consulting fees (advisory board) from Eisai/Merck, Roche/Genentech, Abbvie, AstraZeneca/Merck, and Repare Therapeutics; advisory board participation (no fee) for Blueprint Medicine; and leadership/fiduciary roles for the GOG Foundation Board of Directors (travel cost reimbursement) and NRG Oncology Board of Directors (unpaid). The remaining authors have no conflicts of interest to declare., (Copyright © 2023 Elsevier Inc. All rights reserved.)

Background: We sought to determine the prevalence of germline pathogenic variants (gPVs) in unselected patients with endometrial cancer (EC), define biallelic gPVs within tumors, and describe their associations with clinicopathologic features., Methods: Germline assessment of at least 76 cancer predisposition genes was performed in patients with EC undergoing clinical tumor-normal Memorial Sloan Kettering-Integrated Mutation Profiling of Actionable Cancer Targets (MSK-IMPACT) sequencing from January 1, 2015, to June 30, 2021. In patients with gPVs, biallelic alterations in ECs were identified through analysis of loss of heterozygosity and somatic PVs. Clinicopathologic variables were compared using nonparametric tests., Results: Of 1625 patients with EC, 216 (13%) had gPVs, and 15 patients had 2 gPVs. There were 231 gPVs in 35 genes (75 [32%] high penetrance; 39 [17%] moderate penetrance; and 117 [51%] low, recessive, or uncertain penetrance). Compared with those without gPVs, patients with gPVs were younger (P = .002), more often White (P = .009), and less obese (P = .025) and had differences in distribution of tumor histology (P = .017) and molecular subtype (P < .001). Among 231 gPVs, 74 (32%) exhibited biallelic inactivation within tumors. For high-penetrance gPVs, 63% (47 of 75) of ECs had biallelic alterations, primarily affecting mismatch repair (MMR) and homologous recombination related genes, including BRCA1,BRCA2, RAD51D, and PALB2. Biallelic inactivation varied across molecular subtypes with highest rates in microsatellite instability-high (MSI-H) or copy-number (CN)-high subtypes (3 of 12 [25%] POLE, 30 of 77 [39%] MSI-H, 27 of 60 [45%] CN-high, 9 of 57 [16%] CN-low; P < .001)., Conclusions: Of unselected patients with EC, 13% had gPVs, with 63% of gPVs in high-penetrance genes (MMR and homologous recombination) exhibiting biallelic inactivation, potentially driving cancer development. This supports germline assessment in EC given implications for treatment and cancer prevention., (© The Author(s) 2023. Published by Oxford University Press. All rights reserved. For permissions, please email: journals.permissions@oup.com.)

Objectives: To compare outcomes of patients with premalignant endometrial pathology undergoing hysterectomy with or without sentinel lymph node (SLN) removal. Outcomes of interest included surgical adverse events (AEs), cancer status on final pathology, postoperative treatment, and The Cancer Genome Atlas (TCGA) molecular risk profiles., Methods: We retrospectively identified patients with premalignant pathology on preoperative endometrial biopsy who underwent hysterectomy with or without SLN mapping/excision at our institution from 01/01/2017-12/31/2021. Clinical, pathologic, surgical, and TCGA profiling data were abstracted. Appropriate statistical tests were used., Results: Of 221 patients identified, 161 (73%) underwent hysterectomy with SLN excision and 60 (27%) underwent hysterectomy without SLN excision. Median age and body mass index were similar between groups. Median operative time was 130 min for those who underwent SLN mapping/excision versus 136 min for those who did not (p = 0.6). Thirty-day postoperative AE rates were 9% (n = 15/161) and 13% (n = 8/60), respectively (p = 0.9). Ninety-eight (44%) of 221 patients had grade 1-2 endometrioid endometrial cancer on final pathology (4 [4%] were stage IB or higher). Ten (10%) of 98 patients, all within the SLN group, received adjuvant treatment. Among all patients, of 33 (15%) with TCGA molecular classification data, 27 (82%) had copy number-low, 3 (9%) microsatellite instability-high, 2 (6%) POLE-ultramutated, and 1 (3%) copy number-high disease., Conclusions: SLN assessment appears safe, detects a small number of occult nodal metastases for those upstaged, and provides additional staging information that can guide adjuvant treatment. SLN mapping should be discussed in preoperative counseling and offered using a shared decision-making approach., Competing Interests: Declaration of Competing Interest Outside the submitted work, Dr. Jewell reports personal fee from Covidien/Medtronic; Dr. Abu-Rustum reports grant money from GRAIL paid to the institution; and Dr. Leitao reports personal fees from Medtronic, Intuitive Surgical, Inc., and JnJ/Ethicon., (Copyright © 2022 Elsevier Inc. All rights reserved.)

Objective: To evaluate postoperative and oncologic outcomes associated with pelvic exenteration for non-ovarian gynecologic malignancies., Methods: This was a retrospective review of patients who underwent pelvic exenteration for non-ovarian gynecologic malignancies at our institution from 1/1/2010-12/31/2019. Palliative exenteration cases were excluded from survival analysis. Postoperative complications were early (≤30 days) or late (31-180 days). Complications were graded using a validated institutional scale. Major complications were considered grade ≥ 3. Categorical variables were compared using the chi-square test, and the Kaplan-Meier method was used for survival analysis., Results: Of 100 patients identified, 89 underwent pelvic exenteration for recurrent disease, 5 for palliation, 5 for primary disease, and 1 for persistent disease. Thirty percent had cervical, 27% vulvar, 24% uterine, and 19% vaginal cancer. Sixty-two percent underwent total, 30% anterior, and 8% posterior exenteration. No deaths occurred intraoperatively or within 30 days of surgery. Six patients died after 30 days. Ninety-seven experienced a perioperative complication-49 early, 1 late, and 47 both. Fifty experienced a major complication-22 (44%) early, 19 (38%) late, and 9 (18%) both. No variables were statistically associated with complication development. The 3-year progression-free survival rate was 61.0%; the 3-year overall survival rate was 61.6%. Of 58 surviving patients, 16 (28%) and 4 (7%) were alive after 5 and 10 years, respectively., Conclusion: The overall complication rate for pelvic exenteration remains high. No variables demonstrated association with complication development as the rate was nearly 100%. The low rate of perioperative mortality is likely due to improved perioperative care., Competing Interests: Declaration of Competing Interest Dr. Leitao is an ad hoc speaker for Intuitive Surgical, Inc.; outside the submitted work, he is on the Advisory Board of Ethicon/Johnson & Johnson and Takeda; and reports grants paid to the institution by KCI/Acelity. Dr. Abu-Rustum reports research funding paid to the institution by GRAIL; and Dr. Jewell reports personal fees from Covidien/Medtronic. The other authors do not have potential conflicts of interest to declare., (Copyright © 2022 Elsevier Inc. All rights reserved.)

Objective: In 2018, evidence-based surgical guidelines were introduced to identify appropriate patients with low-grade endometrioid endometrial cancer for ovarian conservation. We sought to identify trends and demographic shifts associated with guideline implementation., Methods: We identified women treated for endometrioid endometrial cancer at our institution from January 2010 to June 2021. Eligibility criteria included age ≤50 years, normal-appearing ovaries on preoperative imaging, no family history of hereditary breast and ovarian cancer syndrome or Lynch syndrome, and no hormone receptor-positive malignancy. Trends in ovarian conservation were examined with the Cochran-Armitage trend test or in a logistic regression model. Associations between ovarian conservation and clinicodemographic factors before and after guideline implementation were compared using Wilcoxon rank-sum and Fisher's exact tests., Results: Of 420 women ≤50 years of age undergoing surgery for endometrioid endometrial cancer, 355 (85%) met the criteria for ovarian conservation-267 (75%) before and 88 (25%) after guideline implementation. Median patient age was 45 years (range 25-50); 62% were non-Hispanic White, 10% Hispanic White, 8% non-Hispanic Black, 0% Hispanic Black, and 20% Asian. Patients were significantly more likely to choose ovarian conservation after (48%) compared with before guideline implementation (21%) (p<0.001). Pre-guidelines, non-Hispanic White women were less likely to elect for ovarian conservation (12%) compared with non-Hispanic Black, Asian, or Hispanic White women (28%) (p=0.002). Similarly, older women were less likely to elect for ovarian conservation compared with younger women (p<0.001). There were no differences by obesity (p=0.68), marital status (p=0.86), or insurance (p=0.89). Post-guidelines, there were no differences in ovarian conservation between non-Hispanic White women (36%) and non-Hispanic Black, Asian, or Hispanic White women (50%) (p=0.56). Older women were still less likely to elect for ovarian conservationcompared with younger women (p<0.001)., Conclusions: After guideline implementation, ovarian conservation increased and uptake disparities across demographic groups decreased., Competing Interests: Competing interests: Outside the submitted work, Dr Abu-Rustum reports research funding paid to the institution from GRAIL., (© IGCS and ESGO 2022. No commercial re-use. See rights and permissions. Published by BMJ.)

Objective: To assess survival among patients diagnosed with uterine carcinosarcoma (CS) who underwent sentinel lymph node (SLN) biopsy alone vs. systematic lymph node dissection (LND)., Methods: We identified newly diagnosed CS patients who underwent primary surgical management from January 1996-December 2019. The SLN cohort underwent SLN biopsy alone with bilateral SLNs identified. The systematic LND cohort did not undergo SLN biopsy., Results: Ninety-nine patients underwent SLN biopsy, and 100 patients underwent systematic LND. There was no difference by age, stage, body mass index, myoinvasion (<50%, ≥50%), lymphovascular space invasion, or positive washings. Eighty-five SLN (85.9%) and 15 LND (15%) underwent minimally invasive surgery (P < 0.001). The median total node count was four (range, 1-13) for SLN and 19 (range, 2-50) for LND (P < 0.001). Nodal metastasis occurred in 23 (23.2%) SLN and in 22 (22%) LND (P = 0.4). Postoperative therapy was administered to 85 (85.9%) SLN and 71 (71%) LND (P = 0.02). Median follow-up was 33 months (range, 1-205) for SLN and 55.3 months (range, 1-269) for LND (P = 0.001). The three-year progression-free survival (PFS) was 62.9% (SE 5.2%) for SLN and 52.3% (SE 5.3%) for LND (P = 0.13). The three-year overall survival (OS) was 72.1% (SE 5.1%) for SLN and 71.6% (SE 4.6%) for LND (P = 0.68). An isolated nodal recurrence occurred in two (2%) SLN and four (4%) LND (P = 0.26)., Conclusions: There is no difference in PFS or OS among CS patients who undergo SLN biopsy vs. systematic LND. SLN biopsy detects nodal metastasis without compromising oncologic outcomes., Competing Interests: Declaration of Competing Interest Outside the submitted work, Dr. Makker reports industry support and unpaid consultant fees from Astra Zeneca, Eisai, Merck, Lilly, Karyopharm, Takeda, Genentech, Clovis, Novartis, Faeth, Zymeworks, GSK, and Moreo. Dr. Makker also discloses personal fees from IBM Watson. Dr. Abu-Rustum reports institutional grants from Stryker/Novadaq and GRAIL. Dr. Leitao reports grants from KCI/Acelity, personal fees from Takeda, J&J/Ethicon, and Intuitive Surgical. All other authors declare no conflicts of interest., (Copyright © 2022 Elsevier Inc. All rights reserved.)

Metastatic progression is the main cause of death in cancer patients, whereas the underlying genomic mechanisms driving metastasis remain largely unknown. Here, we assembled MSK-MET, a pan-cancer cohort of over 25,000 patients with metastatic diseases. By analyzing genomic and clinical data from this cohort, we identified associations between genomic alterations and patterns of metastatic dissemination across 50 tumor types. We found that chromosomal instability is strongly correlated with metastatic burden in some tumor types, including prostate adenocarcinoma, lung adenocarcinoma, and HR+/HER2+ breast ductal carcinoma, but not in others, including colorectal cancer and high-grade serous ovarian cancer, where copy-number alteration patterns may be established early in tumor development. We also identified somatic alterations associated with metastatic burden and specific target organs. Our data offer a valuable resource for the investigation of the biological basis for metastatic spread and highlight the complex role of chromosomal instability in cancer progression., Competing Interests: Declaration of interests S.C. receives consulting fees from Novartis, Lilly, and Sanofi and research funding from Daiichi-Sankyo and Paige.ai. J.J.H. receives consulting fees from Bristol Myers Squibb, Merck, Exelexis, Eisai, QED, Cytomx, Zymeworks, Adaptiimmune, and ImVax and research funding from Bristol Myers Squibb. C.A.I.-D. receives research funding from Bristol Myers Squibb. P. Razavi received consultation/Ad board/Honoraria from Novartis, Foundation Medicine, AstraZeneca, Epic Sciences, Inivata, Natera, and Tempus and institutional grant/funding from Grail, Illumina, Novartis, Epic Sciences, and ArcherDx. C.M.R. has consulted regarding oncology drug development with AbbVie, Amgen, Astra Zeneca, Epizyme, Genentech/Roche, Ipsen, Jazz, Lilly, and Syros and serves on the scientific advisory boards of Bridge Medicines, Earli, and Harpoon Therapeutics. D.Z. receives research funding from Astra Zeneca, Plexxikon, and Genentech and consulting fees from Merck, Synlogic Therapeutics, GSK, Bristol Myers Squibb, Genentech, Xencor, Memgen, Immunos, Agenus, Hookipa, Calidi, and Synthekine. B.W. has an ad hoc membership advisory board Repare Therapeutics. W.A. receives speaking honoraria from Roche, Medscape, Aptitude Health, and Clinical Education Alliance; consulting fees from Clovis Oncology, Janssen, ORIC pharmaceuticals, Daiichi Sankyo; and research funding from AstraZeneca, Zenith Epigenetics, Clovis Oncology, ORIC pharmaceuticals, and Epizyme. G.K.A.-A. receives research funding from Arcus, Agios, Astra Zeneca, Bayer, BioNtech, BMS, Celgene, Flatiron, Genentech/Roche, Genoscience, Incyte, Polaris, Puma, QED, Sillajen, and Yiviva and consulting fees from Adicet, Agios, Astra Zeneca, Alnylam, Autem, Bayer, Beigene, Berry Genomics, Cend, Celgene, CytomX, Eisai, Eli Lilly, Exelixis, Flatiron, Genentech/Roche, Genoscience, Helio, Incyte, Ipsen, Legend Biotech, Loxo, Merck, MINA, Nerviano, QED, Redhill, Rafael, Silenseed, Sillajen, Sobi, Surface Oncology, Therabionics, Twoxar, Vector, and Yiviva. E.M.O. receives research funding from Genentech/Roche, Celgene/BMS, BioNTech, BioAtla, AstraZeneca, Arcus, Elicio, Parker Institute, and AstraZeneca and consulting fees from Cytomx Therapeutics (DSMB), Rafael Therapeutics (DSMB), Sobi, Silenseed, Tyme, Seagen, Molecular Templates, Boehringer Ingelheim, BioNTech, Ipsen, Polaris, Merck, IDEAYA, Cend, AstraZeneca, Noxxon, BioSapien, Bayer (spouse), Genentech-Roche (spouse), Celgene-BMS (spouse), and Eisai (spouse). M.A.P. receive consulting fees from BMS, Merck, Array BioPharma, Novartis, Incyte, NewLink Genetics, Aduro, Eisai, and Pfizer; honoraria from BMS and Merck; research support from RGenix, Infinity, BMS, Merck, Array BioPharma, Novartis, and AstraZeneca. G.J.R. has institutional research funding from Mirait, Takeda, Merck, Roche, Novartis, and Pfizer. S.F.B. holds a patent related to some of the work described targeting CIN in advanced cancer. He owns equity in, receives compensation from, and serves as a consultant and the scientific advisory board and board of directors of Volastra Therapeutics Inc. A.N.S. has advisory board/personal fees from Bristol-Myers Squibb, Immunocore, and Castle Biosciences; research support from Bristol-Myers Squibb, Immunocore, Xcovery, Polaris, Novartis, Pfizer, and Checkmate Pharmaceuticals; and research funding from OBI-Pharma, GSK, Silenseed, BMS, and Lilly. R.Y. receives consulting fees from Array BioPharma/Pfizer, Mirati Therapeutics, and Natera and research funding from Pfizer and Boehringer Ingelheim. D.R.J. is member of the advisory council for Astra Zeneca and member of the Clinical Trial Steering Committee for Merck. D.M. reports disclosures from AstraZeneca, Johnson & Johnson, Boston Scientific, Bristol-Myers Squibb, and Merck. S.P.S. is shareholder and consultant for Canexia Health Inc. M.F.B receives consulting fees from Roche, Eli Lilly, and PetDx and research funding from Grail. D.B.S. has received consulted for and received honoraria from Pfizer, Lilly/Loxo Oncology, Vividion Therapeutics, Scorpion Therapetuics, and BridgeBio. B.N. is an employee of Loxo Oncology at Lilly., (Copyright © 2022 Elsevier Inc. All rights reserved.)

Pelvic exenteration (PE) is one of the most challenging gynecologic oncologic surgeries and is an overriding term for different procedures that entail radical en bloc resection of the female reproductive organs and removal of additional adjacent affected pelvic organs (bladder, rectum, anus, etc.) with concomitant surgical reconstruction to restore bodily functions. Multimodality cross-sectional imaging with MRI, PET/CT, and CT plays an integral part in treatment decision-making, not only for the appropriate patient selection but also for surveillance after surgery. The purpose of this review is to provide a brief background on pelvic exenteration in gynecologic cancers and to familiarize the reader with the critical radiological aspects in the evaluation of patients for this complex procedure. The focus of this review will be on how imaging can aid in treatment planning and guide management.

B-ZIP transcription factors heterodimerize with dominant negative designs, termed A-ZIPs, in a dimerization specific manner and inhibit its ability to bind DNA. Different A-ZIPs produce unique phenotypes in vivo suggesting that they have distinct B-ZIP heterodimerization partners. However, the identification of the in vivo heterodimerization partners of different A-ZIPs remains problematic. To identify the in vivo heterodimerization partners, a chimeric protein containing two ubiquitin motifs at the N-terminal of the A-ZIP domain was designed. The presence of ubiquitin reduced the concentration of specific co-transfected B-ZIP proteins. The ubiquitin enhanced degradation of the B-ZIP heterodimeric partner is inhibited by the proteasome inhibitor MG-132. These ubiquitin tagged A-ZIP dominant negatives may be more active in vivo because their endogenous heterodimerization partners are degraded more efficiently. This may be a general strategy to identify protein interaction partners., (Published by Elsevier Inc.)