Molecular characterization in a case of isolated growth hormone deficiency and further prenatal diagnosis of an unborn sibling.
Familial isolated growth hormone deficiency (GHD) type 1 is characterized by an autosomal recessive pattern of inheritance with varying degrees of phenotypic severity. We report a proband, with isolated GHD (IGHD) with very early growth arrest and undetectable levels of GH. Homozygous complete deletion of the GH1 gene was identified by real-time/quantitative polymerase chain reaction (RT/q-PCR) and confirmed by an independent molecular genetic method; the multiplex ligation-dependent probe amplification (MLPA) technique. Prenatal diagnosis was offered for the subsequent pregnancy in the mother of our proband. Identical heterozygous deletion of the GH1 gene was detected in both parents. The fetus had a similar homozygous deletion of the GH1 gene. We thus report a unique case with a confirmed mutation in GH1 gene in the proband followed by prenatal detection of the same mutation in the amniotic fluid which to our knowledge hitherto has not been documented from India.
Hirabai Cowasji Jehangir Medical Research Institute, Jehangir Hospital, Camp, Pune, Maharashtra, India.
Ruchi
R
Nadar
GenePath Dx, Causeway Healthcare, Phadke Hospital, Shivaji Nagar, Pune, Maharashtra, India.
Kavita
K
Khatod
GenePath Dx, Causeway Healthcare, Phadke Hospital, Shivaji Nagar, Pune, Maharashtra, India.
Nikhil
N
Phadke
Sahyadri Medical Genetics and Tissue Engineering Facility, Shivajinagar, Pune, Maharashtra, India.
Chaitanya
C
Datar
Sahyadri Medical Genetics and Tissue Engineering Facility, Shivajinagar, Pune, Maharashtra, India.
Sujata
S
Vaidya
Hirabai Cowasji Jehangir Medical Research Institute, Jehangir Hospital, Camp, Pune, Maharashtra, India ; GenePath Dx, Causeway Healthcare, Phadke Hospital, Shivaji Nagar, Pune, Maharashtra, India.
Anuradha
A
Khadilkar
Hirabai Cowasji Jehangir Medical Research Institute, Jehangir Hospital, Camp, Pune, Maharashtra, India.
Vaman
V
Khadilkar
Antenatal diagnosis; GH1 deletion; isolated growth hormone deficiency