ABSTRACT
Spinal Muscular atrophy (SMA) Type I is a fatal autosomal recessive disease caused by homozygous deletion of telometric region of exon 7/8 of the SMN gene. Prenatal diagnosis is feasible and desirable by most families. We report on prenatal diagnosis of SMAI in a family where dried umbilical cord stump from the deceased affected baby was used to confirm the diagnosis. Prenatal diagnosis was provided in the subsequent pregnancy. We emphasize the need for storing DNA from individuals affected with suspected single gene disorders.
Subject(s)
Adult , Female , Humans , Pregnancy , Prenatal Diagnosis/methods , Spinal Muscular Atrophies of Childhood/diagnosis , Tissue Preservation , Umbilical CordABSTRACT
Cystic fibrosis (CF) is the most common potentially lethal disorder of Caucassians. Its frequency in India is not known. We diagnosed 30 cases of CF based on sweat chloride testing. The clinical profile and frequency of delta F508 mutation was studied. The frequency of F508 mutation was 27% (16 chromosomes) which is much lower as compared to that patients in the Western world. Eight patients carried other mutations, three of them were new mutations.