PMID- 37906137 OWN - NLM STAT- MEDLINE DCOM- 20231101 LR - 20231101 IS - 1003-9406 (Print) IS - 1003-9406 (Linking) VI - 40 IP - 11 DP - 2023 Nov 10 TI - [Clinical significance of PDGFRbeta gene testing in hematological tumors]. PG - 1334-1339 LID - 10.3760/cma.j.cn511374-20220113-00033 [doi] AB - OBJECTIVE: To explore the clinical and laboratory characteristics of hematological tumors with different types of abnormalities in platelet derived growth factor beta (PDGFRbeta) gene. METHODS: A retrospective analysis was carried out on 141 patients with abnormal long arm of chromosome 5 (5q) and comprehensive medical history data from Changhai Hospital Affiliated to Naval Medical University from 2009 to 2020, and their clinical data were collected. R-banding technique was used for chromosomal karyotyping analysis for the patient's bone marrow, and fluorescence in situ hybridization (FISH) was used to detect the PDGFRbeta gene. The results of detection were divided into the amplification group, deletion group, and translocation group based on FISH signals. The three sets of data column crosstabs were statistically analyzed, and if the sample size was n >= 40 and the expected frequency T for each cell was >= 5, a Pearson test was used to compare the three groups of data. If N < 40 and any of the expected frequency T for each cell was < 5, a Fisher's exact test is used. Should there be a difference in the comparison results between the three sets of data, a Bonferroni method was further used to compare the data. RESULTS: In total 98 patients were detected to have PDGFRbeta gene abnormalities with the PDGFRbeta probe, which yielded a detection rate of 69.50% (98/141). Among these, 38 cases (38.78%) had PDGFRbeta gene amplifications, 57 cases (58.16%) had deletions, and 3 (3.06%) had translocations. Among the 98 cases, 93 were found to have complex karyotypes, including 37 cases from the amplification group (97.37%, 37/38), 55 cases from the deletion group (96.49%, 55/57), and 1 case from the translocation group (33.33%, 1/3). Analysis of three sets of clinical data showed no significant gender preponderance in the groups (P > 0.05). The PDGFRbeta deletion group was mainly associated with myeloid tumors, such as acute myeloid leukemia (AML) and myelodysplastic syndrome (MDS) (P < 0.001). The PDGFRbeta amplification group was more common in lymphoid tumors, such as multiple myeloma (MM) (P < 0.001). The PDGFRbeta translocation group was also more common in myelodysplastic/myeloproliferative tumors (MDS/MPN). CONCLUSION: Tumors with PDGFRbeta gene rearrangement may exhibit excessive proliferation of myeloproliferative tumors (MPN) and pathological hematopoietic changes in the MDS, and have typical clinical and hematological characteristics. As a relatively rare type of hematological tumor, in addition to previously described myeloid tumors such as MPN or MDS/MPN, it may also cover lymphoid/plasma cell tumors such as multiple myeloma and non-Hodgkin's lymphoma. FAU - Guo, Mengqiao AU - Guo M AD - Department of Clinical Laboratory, Shanghai Fourth Hospital Affiliated to Tongji University School of Medicine, Shanghai 200434, China. angle_gsl@sina.com. FAU - Guo, Fangyu AU - Guo F FAU - Zhang, Yan AU - Zhang Y FAU - Cheng, Hui AU - Cheng H FAU - Tang, Gusheng AU - Tang G FAU - Huang, Zhengxia AU - Huang Z FAU - Gong, Shenglan AU - Gong S LA - chi PT - English Abstract PT - Journal Article PL - China TA - Zhonghua Yi Xue Yi Chuan Xue Za Zhi JT - Zhonghua yi xue yi chuan xue za zhi = Zhonghua yixue yichuanxue zazhi = Chinese journal of medical genetics JID - 9425197 RN - EC 2.7.10.1 (PDGFRB protein, human) SB - IM MH - Humans MH - Clinical Relevance MH - *Hematologic Neoplasms/genetics MH - In Situ Hybridization, Fluorescence MH - *Multiple Myeloma MH - *Myelodysplastic Syndromes MH - Retrospective Studies MH - Translocation, Genetic EDAT- 2023/10/31 12:41 MHDA- 2023/11/01 12:43 CRDT- 2023/10/31 11:12 PHST- 2023/11/01 12:43 [medline] PHST- 2023/10/31 12:41 [pubmed] PHST- 2023/10/31 11:12 [entrez] AID - 940640227 [pii] AID - 10.3760/cma.j.cn511374-20220113-00033 [doi] PST - ppublish SO - Zhonghua Yi Xue Yi Chuan Xue Za Zhi. 2023 Nov 10;40(11):1334-1339. doi: 10.3760/cma.j.cn511374-20220113-00033.