associated with non-syndromic childhood hearing impairment (HI) as well as the
environmental causes of HI in Ghana. Medical reports of 1,104 students attending schools
for the deaf were analyzed. Families segregating HI, as well as isolated cases of HI of
putative genetic origin were recruited. DNA was extracted from peripheral blood followed by
Sanger sequencing of the entire coding region of GJB2. Multiplex PCR and Sanger …