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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.)