PMID- 37548407 OWN - NLM STAT- MEDLINE DCOM- 20231127 LR - 20231127 IS - 2324-9269 (Electronic) IS - 2324-9269 (Linking) VI - 11 IP - 11 DP - 2023 Nov TI - Mutation spectrum of retinoblastoma patients in Vietnam. PG - e2244 LID - 10.1002/mgg3.2244 [doi] LID - e2244 AB - BACKGROUND: Retinoblastoma (RB), an intraocular malignancy commonly diagnosed in children, is mostly caused by inactivating mutations of both alleles of the RB1 gene. Early genetic screening for RB1 gene mutations would greatly improve treatment outcomes and patient management. METHODS: In this study, both somatic and germline mutations were detected in blood and tumour samples of 42 RB patients using direct sequencing and multiplex ligation-dependent probe amplification. RESULTS: In total, 34 different mutations were found in 36 patients, including 1 SNP, 4 large deletions, 5 splicing sites, 1 missense, 7 frameshifts and 17 nonsense mutations. There were five novel mutations and one unreported which have not been found in large databases such as Leiden Open Variation Database (LOVD) and ClinVar. CONCLUSION: A higher rate of RB patients carrying heterozygous germline mutation and highly prevalent with pathogenic truncated mutation, hence, early detection of RB is essential for vision salvation and genetic counselling. CI - (c) 2023 The Authors. Molecular Genetics & Genomic Medicine published by Wiley Periodicals LLC. FAU - Linh, Dao Nguyen Ha AU - Linh DNH AD - Hanoi Medical University, Hanoi, Vietnam. AD - National Institute of Ophthalmology, Hanoi, Vietnam. FAU - Van Huy, Nguyen AU - Van Huy N AD - National Institute of Ophthalmology, Hanoi, Vietnam. FAU - Nguyen, Phuoc-Dung AU - Nguyen PD AUID- ORCID: 0000-0002-5527-7360 AD - Hanoi Medical University, Hanoi, Vietnam. FAU - Le Thi, Phuong AU - Le Thi P AD - Hanoi Medical University, Hanoi, Vietnam. FAU - Tuan, Hoang Anh AU - Tuan HA AD - National Institute of Ophthalmology, Hanoi, Vietnam. FAU - Van Nguyen, Trong AU - Van Nguyen T AD - National Institute of Ophthalmology, Hanoi, Vietnam. FAU - Tran, Thu Ha AU - Tran TH AD - National Institute of Ophthalmology, Hanoi, Vietnam. FAU - Tran, Hai Anh AU - Tran HA AD - Hanoi Medical University, Hanoi, Vietnam. FAU - Ta, Thanh Dat AU - Ta TD AD - Hanoi Medical University, Hanoi, Vietnam. FAU - Pham, Tuan L A AU - Pham TLA AD - Hanoi Medical University, Hanoi, Vietnam. FAU - Bui, The-Hung AU - Bui TH AD - Hanoi Medical University, Hanoi, Vietnam. AD - Center for Molecular Medicine, Clinical Genetics Unit, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden. FAU - Tran, Thinh Huy AU - Tran TH AD - Hanoi Medical University, Hanoi, Vietnam. AD - Hanoi Medical University Hospital, Hanoi Medical University, Hanoi, Vietnam. FAU - Van Ta, Thanh AU - Van Ta T AD - Hanoi Medical University, Hanoi, Vietnam. AD - Hanoi Medical University Hospital, Hanoi Medical University, Hanoi, Vietnam. FAU - Tran, Van-Khanh AU - Tran VK AUID- ORCID: 0000-0002-5059-8106 AD - Hanoi Medical University, Hanoi, Vietnam. LA - eng GR - 2385/QD-BYT/Vietnam Ministry of Health/ PT - Journal Article DEP - 20230807 PL - United States TA - Mol Genet Genomic Med JT - Molecular genetics & genomic medicine JID - 101603758 SB - IM MH - Child MH - Humans MH - *Retinoblastoma/genetics/pathology MH - Vietnam MH - Mutation MH - Genetic Testing MH - *Retinal Neoplasms/genetics/pathology PMC - PMC10655509 OTO - NOTNLM OT - MLPA OT - RB1 gene OT - mutation OT - retinoblastoma OT - sequencing COIS- The authors declare no conflict of interest. EDAT- 2023/08/07 13:09 MHDA- 2023/11/27 12:43 PMCR- 2023/08/07 CRDT- 2023/08/07 08:13 PHST- 2023/06/12 00:00 [revised] PHST- 2023/01/17 00:00 [received] PHST- 2023/07/12 00:00 [accepted] PHST- 2023/11/27 12:43 [medline] PHST- 2023/08/07 13:09 [pubmed] PHST- 2023/08/07 08:13 [entrez] PHST- 2023/08/07 00:00 [pmc-release] AID - MGG32244 [pii] AID - 10.1002/mgg3.2244 [doi] PST - ppublish SO - Mol Genet Genomic Med. 2023 Nov;11(11):e2244. doi: 10.1002/mgg3.2244. Epub 2023 Aug 7.