PMID- 35164811 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220219 IS - 1755-8166 (Print) IS - 1755-8166 (Electronic) IS - 1755-8166 (Linking) VI - 15 IP - 1 DP - 2022 Feb 14 TI - Verification of a cryptic t(Y;15) translocation in a male with an apparent 45,X karyotype. PG - 3 LID - 10.1186/s13039-022-00581-6 [doi] LID - 3 AB - BACKGROUND: A rare disease is that an individual with a non-chimeric karyotype of 45,X develops into a male. We explored the genetic aetiology of an infertile male with an apparent 45,X karyotype, which was subsequently verified as cryptic translocation between chromosomes Y and 15. METHODS: DNA was extracted from the patient's peripheral blood. A range of genetic testing was performed, including conventional chromosomal karyotyping, short tandem repeat (STR) analysis for azoospermia factor (AZF) region, fluorescence in situ hybridization (FISH) with specific probes groups of DXZ1/DYZ3, DYZ3/D15Z1/PML and SRY/D15Z1/PML, and chromosomal microarray analysis (CMA) for genomic copy number variations (CNVs). RESULTS: The patient was found to have an apparent 45,X karyotype. STR analysis showed that he possessed a short arm of the Y chromosome, including the SRY gene; however, he was missing the long arm of the Y chromosome, including AZFa + b + c and Yqter. A FISH assay of DXZ1 and DYZ3 probes showed a green signal of the X centromere and a red of the Y centromeric signal on a D-group-sized chromosome. By FISH assaying with D15Z1 and DYZ3 probes, chromosomes 15 and Y centromeric signals appeared closely on a single chromosome, as the PML control probe ascertained. A further FISH assay with D15Z1 and SRY probes revealed a signal of the SRY gene at the end of one arm of chromosome 15. The result of the CMA indicated a deletion with an approximate size of 45.31 Mb spanning from Yq11 to Yter. CONCLUSION: Our study enriched the karyotype-phenotype correlation of Y and 15 chromosomes translocation. It strengthened the critical roles of molecular genetic techniques in identifying the chromosomal breakpoints and regions involved. Genetic aetiology can guide early intervention in childhood and assisted reproduction in adulthood. CI - (c) 2022. The Author(s). FAU - Qin, Shengfang AU - Qin S AUID- ORCID: 0000-0001-9391-890X AD - Department of Medical Genetics and Prenatal Diagnosis, Sichuan Provincial Maternity and Child Health Care Hospital, Chengdu, 610045, Sichuan, China. qinshengfang@126.com. FAU - Wang, Xueyan AU - Wang X AD - Department of Medical Genetics and Prenatal Diagnosis, Sichuan Provincial Maternity and Child Health Care Hospital, Chengdu, 610045, Sichuan, China. FAU - Wang, Jin AU - Wang J AD - Department of Medical Genetics and Prenatal Diagnosis, Sichuan Provincial Maternity and Child Health Care Hospital, Chengdu, 610045, Sichuan, China. FAU - Zhang, Zhuo AU - Zhang Z AD - Department of Medical Genetics and Prenatal Diagnosis, Sichuan Provincial Maternity and Child Health Care Hospital, Chengdu, 610045, Sichuan, China. FAU - Chen, Ximin AU - Chen X AD - Department of Medical Genetics and Prenatal Diagnosis, Sichuan Provincial Maternity and Child Health Care Hospital, Chengdu, 610045, Sichuan, China. FAU - Yin, Yan AU - Yin Y AD - Department of Medical Genetics and Prenatal Diagnosis, Sichuan Provincial Maternity and Child Health Care Hospital, Chengdu, 610045, Sichuan, China. FAU - Ye, Mengling AU - Ye M AD - Department of Medical Genetics and Prenatal Diagnosis, Sichuan Provincial Maternity and Child Health Care Hospital, Chengdu, 610045, Sichuan, China. FAU - Li-Ling, Jesse AU - Li-Ling J AD - Department of Medical Genetics, West China Second Hospital, Sichuan University, Chengdu, 610041, Sichuan, China. jliling@scu.edu.cn. LA - eng PT - Journal Article DEP - 20220214 PL - England TA - Mol Cytogenet JT - Molecular cytogenetics JID - 101317942 PMC - PMC8842983 OTO - NOTNLM OT - 45,X male OT - Azoospermia factor OT - Chromosomal microarray analysis OT - Fluorescence in situ hybridization OT - Sex-determining region Y gene OT - Y chromosome translocation COIS- The authors declare that they have no competing interests. EDAT- 2022/02/16 06:00 MHDA- 2022/02/16 06:01 PMCR- 2022/02/14 CRDT- 2022/02/15 05:31 PHST- 2021/08/21 00:00 [received] PHST- 2022/01/28 00:00 [accepted] PHST- 2022/02/15 05:31 [entrez] PHST- 2022/02/16 06:00 [pubmed] PHST- 2022/02/16 06:01 [medline] PHST- 2022/02/14 00:00 [pmc-release] AID - 10.1186/s13039-022-00581-6 [pii] AID - 581 [pii] AID - 10.1186/s13039-022-00581-6 [doi] PST - epublish SO - Mol Cytogenet. 2022 Feb 14;15(1):3. doi: 10.1186/s13039-022-00581-6.