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Objective To analyze the relationship between MyD88L265P and CD79B mutations in tumor tissue and the prognosis of primary central nervous system lymphoma (PCNSL). Methods 18 PCNSL patients with normal immune function (no history of HIV infection and immunosuppressants administration) who were diagnosed by craniotomy or stereotaxic biopsy in the Second Hospital of Lanzhou University from August 2018 to November 2020 were retrospectively analyzed. Real-time quantitative PCR and first-generation sequencing techniques were respectively used to detect MyD88L265P and CD79B mutations in tumor tissues of 18 PCNSL patients. Univariate analysis and Cox regression multivariate analysis were performed for indicators that may be associated with first progression-free survival (PFS) and overall survival in PCNSL. Results The mutation rate of MyD88L265P was 38.9%, the mutation rate of CD79B was 33.3%, and the co-mutation rate of MyD88L265P/CD79B was 27.8% in PCNSL tissue of 18 patients. Univariate analysis showed that the PCNSL patients with multiple lesions, deep involvement of lesions, and tissue CD79B mutation had a statistically significant shorter time of PFS (P<0.05). Multivariate analysis showed that deep lesion involvement(HR=0.135, 95%CI 0.023-0.799, P<0.05) and CD79B mutation (HR=0.149, 95%CI 0.028-0.800, P<0.05) in PCNSL tissue were independent prognostic factors for PCNSL patients. Conclusion The frequency of MyD88L265P and CD79B mutations was high in tumor tissues of 18 PCNSL patients, and these two gene mutations may be associated with poor prognosis of PCNSL, especially CD79B mutation.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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