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- W4385667133 abstract "Topic: 6. Chronic lymphocytic leukemia and related disorders - Clinical Background: Chronic lymphocytic leukemia (CLL) patients with hepatitis B virus (HBV) infection have a poor prognosis, underlying mechanism remains unclear. NOTCH mutations are frequent in CLL and associated with disease progression and drug resistance. It is also reported to be associated with hepatitis infection in lymphoid malignancies. Aims: In order to investigate the relation between NOTCH pathway and HBV-associated CLL, we studied 98 previously untreated HBV positive CLL patients and 244 HBV-negative CLL. Methods: A total of 342 treatment naïve patients diagnosed with CLL at the First Affiliated Hospital of Nanjing Medical University from 01 Jan 2010 to 31 Oct 2021 were enrolled in our study. The mutation hotspots of NOTCH pathway genes were analyzed by Next Generation Sequencing (NGS) of DNA that used PCR for the identification of genomic mutation. Fisher exact and χ2 tests were used to assess the correlation between HBV infection and clinical, demographic factors in CLL patients. Survival curves were generated by Graphpad 9.5. Results: NOTCH mutations were more frequent in HBV positive CLL subgroup (17.3% vs 7.4%, p=0.033). By survival analysis, HBV infection was associated with disease progression and poor survival [p=0.0099 for overall survival (OS) and p=0.0446 for time-to-treatment (TTT)]. Any lesions of the NOTCH pathway (NOTCH1, NOTCH2 and SPEN) aggravated prognosis. In multivariate analysis, NOTCH mutation retained an independent significance for HBV-infected patients (p=0.016 for OS and p=0.023 for TTT). However, HBV positive with NOTCH unmutated had no statistical difference in prognosis compared with HBV negative patients (p=0.1706 for OS and p=0.2387 for TTT), which indicated that NOTCH pathway mutation contributed to inferior prognosis in HBV-infected CLL. Summary/Conclusion: In conclusion, a cohort of CLL patients with HBV positive displayed a worse clinical outcome and the status of NOTCH signaling pathway might play a crucial role.Keywords: Chronic lymphocytic leukemia, Prognosis, Notch signaling, Hepatitis B virus" @default.
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- W4385667133 date "2023-08-01" @default.
- W4385667133 modified "2023-10-05" @default.
- W4385667133 title "PB1946: NOTCH PATHWAY MUTATION CONTRIBUTES TO INFERIOR PROGNOSIS IN HBV-INFECTED CHRONIC LYMPHOCYTIC LEUKEMIA" @default.
- W4385667133 doi "https://doi.org/10.1097/01.hs9.0000974600.93223.75" @default.
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