. 2012; 9(1): 26-29 | DOI: 10.5505/tjod.2012.48295 | |||
PARTIAL TRISOMY 9 WITH t(9;21)(q22;q10) TRANSLOCATION DETECTED IN PRENATAL DIAGNOSIS: A CASE REPORTMutlu Karkucak1, Şebnem Sağ1, Tahsin Yakut1, Tuna Gülten1, Orhan Görükmez1, Yalçın Kimya21Department Of Medical Genetics, Uludag University Faculty Of Medicine,bursa, Turkey2Department Of Obstetrics And Gynecology, Uludag University Faculty Of Medicine,bursa, Turkey Trisomy 9p may occur due to either parental reciprocal translocation of chromosome 9 with other chromosomes or de-novo aberrations. Typical craniofacial features, intrauterine developmental delay, cleft lip-palate, micrognathia, cardiac abnormalities and congenital hip dislocation are findings which are expected to be seen in patients with partial trisomy 9pter→q22-32. With the triple testing of a 28–year-old G4P0A3 pregnant woman, performed during her fourth pregnancy, the risk of trisomy 18 was found to be increased. A cytogenetic analysis of the amniotic fluid was performed to establish prenatal diagnosis, and revealed the presence of three chromosome 9 and one chromosome 21. Thereupon, subsequent metaphase FISH analysis showed that one of three chromosome 9 was translocated with one of the chromosome 21 and this was considered to be partial trisomy 9 (pter→q22). As the parents have normal karyotype, this change in the fetus was considered to be de-novo. With the autopsy performed following the termination, the presence of agenesis of the corpus callosum and inlet VSD, which had been observed with previous the fetal USG was confirmed. This case will contribute to knowledge of the clinical evaluation of chromosomal abnormality including both 9p trisomy and chromosome 21 translocation, and also to genetic counseling for these patients. Keywords: translocation, partial trisomy 9, prenatal diagnosis.PRENATAL TANIDA SAPTANAN t(9;21)(q22;q10) TRANSLOKASYONU OLAN PARSİYEL TRİZOMİ 9: BİR OLGU SUNUMUMutlu Karkucak1, Şebnem Sağ1, Tahsin Yakut1, Tuna Gülten1, Orhan Görükmez1, Yalçın Kimya21Uludağ Üniversitesi Tıp Fakültesi, Tıbbi Genetik Anabilim Dalı, Bursa2Uludağ Üniversitesi Tıp Fakültesi, Kadın Hastalıkları Ve Doğum Anabilim Dalı, Bursa Trizomi 9p, 9. kromozomun diğer kromozomlarla parental resiprokal translokasyonu ya da de-novo aberasyonlar sonucu meydana gelebilmektedir. Parsiyel trizomi 9pter->q22-32 ‘de ise tipik kraniofasiyal özellikler, intrauterin büyüme-gelişme geriliği, yarık damak-dudak, mikrognati, kardiyak anomaliler ve konjenital kalça çıkığı, görülmesi beklenen bulgulardır. Mutlu Karkucak, Şebnem Sağ, Tahsin Yakut, Tuna Gülten, Orhan Görükmez, Yalçın Kimya. PARTIAL TRISOMY 9 WITH t(9;21)(q22;q10) TRANSLOCATION DETECTED IN PRENATAL DIAGNOSIS: A CASE REPORT. . 2012; 9(1): 26-29 Corresponding Author: Tahsin Yakut, Türkiye |
|