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Copyright of Pôle Sud is the property of Centre Comparatif d'Etudes sur les Politiques Publiques et les Espaces Locaux and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Background: Pregnancy-associated haematological malignancy is a rare event; therefore, data available to guide the treatment are scarce. We aimed to evaluate the incidence, overall survival, and maternal morbidity and mortality of women with pregnancy-associated haematological malignancies., Methods: We conducted a nationwide observational cohort study using the French National Healthcare Data System (SNDS), a health-care administrative database covering up to 99% of the French population. We included all pregnancies in France ending between Jan 1, 2012, and Dec 31, 2022. Pregnancies with terminations or miscarriages managed on an outpatient basis, and women with a history of haematological malignancies before pregnancy were excluded. A Cox proportional hazards model was used to assess overall survival, defined as the date of haematological malignancy diagnosis to either death or the end of the study follow-up, in the haematological malignancy during pregnancy group (pregnancies with a diagnosis of haematological malignancy during pregnancy) compared with the haematological malignancy post-pregnancy group (pregnancies with a diagnosis of haematological malignancy in the year following pregnancy). Severe maternal morbidity was compared in the haematological malignancy during pregnancy group versus the reference group (pregnancies without a history of haematological malignancy or a diagnosis of pregnancy-associated haematological malignancy). Births were classified as very preterm (<32 weeks of pregnancy), preterm (32-36 weeks), and term (≥37 weeks) and compared in the haematological malignancy during pregnancy group versus the reference group. Inverse probability weighting (IPW) was used for confounder adjustment, using maternal age (categorised), comorbidities, socioeconomic status, and year of delivery (as a category)., Findings: Of 9 996 523 pregnancies in 5 995 235 women, 1366 pregnancy-associated haematological malignancies were identified: 413 during pregnancy (4·13 per 100 000 pregnancies) and 953 (9·53 per 100 000 pregnancies) within 12 months of the end of pregnancy (post-pregnancy). No significant differences in overall survival were observed between the haematological malignancy during and post-pregnancy groups across all types of haematological malignancy (IPW-adjusted hazard ratio 0·91 [95% CI 0·62-1·34], p=0·63), specifically for Hodgkin lymphoma (0·56 [0·07-4·53], p=0·59), aggressive B-cell non-Hodgkin lymphoma (0·52 [0·12-2·38], p=0·40), and acute leukaemia alone (0·84 [0·50-1·41], p=0·51). Severe maternal morbidity was more frequent in the haematological malignancy during pregnancy group than in the reference group (86 [26·2%] of 328 completed pregnancies vs 120 335 [1·5%] of 7 945 909 completed pregnancies; IPW-adjusted odds ratio 22·71 [95% CI 17·72-29·10], p<0·0001). We observed an increase in very preterm birth (32 [9·8%] vs 92 712 [1·2%]; IPW-adjusted odds ratio 11·90 [95% CI 7·91-17·91], p<0·0001) and preterm birth (116 [35·4%] vs 430 472 [5·4%]; 11·76 [9·34-14·81], p<0·0001) in the haematological malignancy during pregnancy group compared with the reference group., Interpretation: This nationwide observational study examines pregnancy-associated haematological malignancies in France, revealing no significant difference in overall survival between women diagnosed during pregnancy and post-pregnancy. Our data highlight an increased frequency of severe maternal morbidity and obstetric complications among women diagnosed during pregnancy. Notably, the study underscores the necessity for specialised care to manage these complex cases effectively., Funding: None., Translation: For the French translation of the abstract see Supplementary Materials section., Competing Interests: Declaration of interests CC declares consulting fees from Pfizer. LH declares support for attending meeting from Servier. NB is an unpaid member of the French Birth Defects Scientific Expert Committee (Santé Publique France). RB declares consulting fees from Bristol Myers Squibb, honoraria for presentations form Jazz Pharma, and support for attending meetings from Sandoz. All other authors declare no competing interests., (Copyright © 2024 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY 4.0 license.)

Objective: To determine the prevalence of musculoskeletal (MSK) symptoms appearing after a SARS-CoV-2 infection., Methods: This was an observational cohort based on data available at the Assistance publique-Hôpitaux de Paris (AP-HP) Clinical Data Warehouse (which includes data of more than 11 million patients treated in the 39 hospitals from AP-HP). The data collected included both ICD-10 codes in discharge summaries, and recurring wording expressions search on medical electronic documents. To be included in the analysis, patients had to have a positive RT-PCR for SARS-CoV-2 and be admitted in any department of AP-HP. Patients with previous history of any MSK condition were excluded. MSK conditions were considered if occurring up to 90days after the positive RT-PCR. Demographics and disease characteristics including treatment were compared in both groups (MSK yes/no) by t-test or Chi 2 test, accordingly., Results: In total, 17,771 patients had a positive SARS-CoV-2 RT-PCR at APHP and were admitted in any department of AP-HP. Among them, 15,601 had no previous history of MSK condition and among them, 1370 (8.8%) presented with MSK symptoms after the viral infection. The most prevalent MSK symptoms were back pain (32.9%), followed by arthralgia (29.9%), radicular pain (20.2%) and arthritis (22.8%). Patients with MSK symptoms (MSK+) were older (67 y vs. 64 y, P<0.01), more frequently obese (29% vs. 25%, P=0.03), hypertensive (34% vs. 30%, P<0.01) and with diabetes (21% vs. 18%, P<0.01). Treatment for SARS-CoV-2 was slightly different in both groups, with higher corticosteroids (40.7% vs. 29.0%, P<0.01), antivirals (21.5% vs. 15.3%, P<0.01) and immunosuppressors (8.5% vs. 4.5%, P<0.01) prescription rates in the MSK+ group., Conclusion: MSK symptoms occurred in almost 9% of patients admitted to the hospital after a SARS-CoV-2 infection, particularly in older and more comorbid patients. Further analysis evaluating whether these symptoms remain over time are needed., (Copyright © 2022 Société française de rhumatologie. Published by Elsevier Masson SAS. All rights reserved.)

In France the recommendation is to sequence the RT gene of HIV-1 isolates prior to initiation of antiretroviral therapy. The data are routinely used for molecular characterization of the viruses yielding the subtype or CRF of the isolates investigated together with the absence or presence of drug resistance mutations. In this study, we performed bootscanning analysis on the whole pol gene, in which in vitro and in vivo intersubtype recombination has been reported to occur frequently. We showed that out of 15 HIV-1 isolates, two exhibited a recombination unexpected by this routine sequencing method.