Interphase fluorescence in situ hybridization assisting in prenatal counseling for amniocentesis karyotyping-detected fetal mosaicism

Autor: Sheng-Yuan Su, Ho-Yen Chueh, Ching-Pei Li, Yao-Lung Chang, Shuenn-Dyh Chang, Chih-Ping Chen
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Zdroj: Taiwanese Journal of Obstetrics & Gynecology, Vol 54, Iss 5, Pp 588-591 (2015)
Druh dokumentu: article
ISSN: 1028-4559
DOI: 10.1016/j.tjog.2015.08.019
Popis: Objective: To evaluate how interphase fluorescence in situ hybridization (FISH) played a role in genetic counseling when encountering prenatally detected fetal mosaicism cases. Materials and methods: We retrospectively reviewed 17 cases of amniotic fluid specimens diagnosed with Level III chromosome mosaicism using in situ coverslip culture method. Among them, seven received additional interphase FISH tests; five were related to autosomal mosaicism and two others were due to sex chromosomes. Results: In the autosome group, one couple chose to terminate the pregnancy due to a high percentage of trisomy 21 cells (48.1%) shown on interphase FISH; in the gonosome group, one case chose termination as FISH exhibited as high as 80% of XXYY cells. Conclusion: Performing interphase FISH on uncultured amniocytes for cases detected with mosaicism by traditional amniotic fluid culture provided quick confirmation of the karyotyping results; additionally, obtaining information about the extent of the abnormality involved using interphase FISH could also play a role in counseling patients on the decision making concerning the future of their pregnancies.
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