PMID- 35361246 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220404 IS - 1755-8166 (Print) IS - 1755-8166 (Electronic) IS - 1755-8166 (Linking) VI - 15 IP - 1 DP - 2022 Mar 31 TI - Characterization of a rare mosaic X-ring chromosome in a patient with Turner syndrome. PG - 15 LID - 10.1186/s13039-022-00593-2 [doi] LID - 15 AB - BACKGROUND: Ring chromosomes can be formed by terminal breaks of two arms of a chromosome and their rejoining, leading to a loss of genetic material. They may also be formed by telomere-telomere fusions with no deletion, resulting in the formation of a complete ring. Mosaic X-ring chromosomes are extremely rare and have highly variable phenotypes. Here, we report a case with a mosaic X-ring chromosome in a patient with Turner syndrome, and we illustrate the unreported complicated mechanism using chromosome analysis and fluorescence in situ hybridization (FISH). CASE PRESENTATION: A 10-year-old girl of short stature presenting Turner syndrome was admitted to our hospital. The patient's clinical characteristics were subsequently documented. Genetic analysis showed a karyotype of mostly 45,X[140]/46,X,r(X)[60]. The X ring chromosome was cytogenetically characterized as 45,X/46,X,r(X)(p22.32q21.1), with a length of approximately 74 Mb. CONCLUSIONS: Taken together, we report a rare case with a mosaic X ring chromosome in Turner syndrome and we believe this case expands our collective knowledge of mosaic structural chromosomal disorders and provides new insight into clinical management and genetic counseling for Turner syndrome. CI - (c) 2022. The Author(s). FAU - Luo, Hunjin AU - Luo H AD - Women and Children Healthcare Hospital of Zhuzhou, No. 128 Che Zhan Road, Zhuzhou, 412000, Hunan Province, China. 490824805@qq.com. FAU - Ni, Liu AU - Ni L AD - Women and Children Healthcare Hospital of Zhuzhou, No. 128 Che Zhan Road, Zhuzhou, 412000, Hunan Province, China. FAU - Yang, Yi-Qiong AU - Yang YQ AD - Women and Children Healthcare Hospital of Zhuzhou, No. 128 Che Zhan Road, Zhuzhou, 412000, Hunan Province, China. FAU - Zhang, Xiao-Min AU - Zhang XM AD - Women and Children Healthcare Hospital of Zhuzhou, No. 128 Che Zhan Road, Zhuzhou, 412000, Hunan Province, China. FAU - Huang, Hongping AU - Huang H AD - Women and Children Healthcare Hospital of Zhuzhou, No. 128 Che Zhan Road, Zhuzhou, 412000, Hunan Province, China. FAU - Tan, Sainan AU - Tan S AD - Women and Children Healthcare Hospital of Zhuzhou, No. 128 Che Zhan Road, Zhuzhou, 412000, Hunan Province, China. FAU - Ling, Chen AU - Ling C AD - Women and Children Healthcare Hospital of Zhuzhou, No. 128 Che Zhan Road, Zhuzhou, 412000, Hunan Province, China. FAU - Liang, Li AU - Liang L AD - Women and Children Healthcare Hospital of Zhuzhou, No. 128 Che Zhan Road, Zhuzhou, 412000, Hunan Province, China. FAU - Wang, Ling AU - Wang L AD - Women and Children Healthcare Hospital of Zhuzhou, No. 128 Che Zhan Road, Zhuzhou, 412000, Hunan Province, China. FAU - Dan, Tang AU - Dan T AD - Women and Children Healthcare Hospital of Zhuzhou, No. 128 Che Zhan Road, Zhuzhou, 412000, Hunan Province, China. FAU - Zhou, Shu-Xiang AU - Zhou SX AD - Women and Children Healthcare Hospital of Zhuzhou, No. 128 Che Zhan Road, Zhuzhou, 412000, Hunan Province, China. FAU - Yang, Chunliu AU - Yang C AD - Women and Children Healthcare Hospital of Zhuzhou, No. 128 Che Zhan Road, Zhuzhou, 412000, Hunan Province, China. LA - eng GR - 2019JJ60080/Natural Science Foundation of Hunan Province/ PT - Journal Article DEP - 20220331 PL - England TA - Mol Cytogenet JT - Molecular cytogenetics JID - 101317942 PMC - PMC8973883 OTO - NOTNLM OT - Chromosome microarray analysis OT - Fluorescence in situ hybridization OT - Ring X chromosome OT - Turner syndrome COIS- The authors declare that they have no competing interests. EDAT- 2022/04/02 06:00 MHDA- 2022/04/02 06:01 PMCR- 2022/03/31 CRDT- 2022/04/01 05:31 PHST- 2022/03/02 00:00 [received] PHST- 2022/03/22 00:00 [accepted] PHST- 2022/04/01 05:31 [entrez] PHST- 2022/04/02 06:00 [pubmed] PHST- 2022/04/02 06:01 [medline] PHST- 2022/03/31 00:00 [pmc-release] AID - 10.1186/s13039-022-00593-2 [pii] AID - 593 [pii] AID - 10.1186/s13039-022-00593-2 [doi] PST - epublish SO - Mol Cytogenet. 2022 Mar 31;15(1):15. doi: 10.1186/s13039-022-00593-2.