X;7 translocation in an Indian woman with hypergonadotropic amenorrhea-a case report.
Translocations involving X chromosome and an autosome are rather rare due to the associated infertility in men and subfertility in women. X-autosome translocations are frequently associated with primary or secondary ovarian failure and at times Turner syndrome-like features if there is an involvement of the critical region of Xq13-q26. A 19-year-old proposita with a complaint of amenorrhea was found to have hypoplastic uterus and streak ovaries. Hormonal profile revealed hypergonadotropic hypogonadism. Chromosomal analysis of 25 conventionally stained metaphases revealed the karyotype to be 46,X,t(X;7)(q13;p15)de novo. This rare finding is the first report from India, to the best of our knowledge. She also exhibited the maternally inherited heteromorphic variant of chromosome 21. The occurrence of t(X;7) in the proposita with hypergonadotropic amenorrhea confirms the role of X-autosome translocations in ovarian dysfunction.
Vasu
Vidya Rendheer
VR
Department of Genetics, Dr. A.L.M. P.G. Institute of Basic Medical Sciences, University of Madras, Chennai, India.
Chandra
Nallathambi
N
Santhiya
Sathiyavedu Thyagarajan
ST
D000328:Adult; D000568:Amenorrhea / Q000235:genetics*; D025063:Chromosome Disorders / Q000235:genetics; D041321:Chromosomes, Human, X / Q000235:genetics*; D005260:Female; D006801:Humans; D007006:Hypogonadism / Q000235:genetics*; D007194:India; D007621:Karyotyping; D012729:Sex Chromosome Aberrations; D014178:Translocation, Genetic; D055815:Young Adult