A FAMILY WITH HEREDITARY SERUM-CHOLINESTERASE DEFICIENCY

A family with serum cholinesterase (SChE) deficiency is reported, A 64 -year-old woman was admitted for the excision of colon adenoma; her la boratory data revealed a markedly decreased level of SChE. SChE genes of the patient and her family members were amplified by the polymerase chain reaction (PCR) and analyzed by direct sequencing, The patient's SChE gene had a homozygous frame shift mutation, in which an extra ad enine was inserted in codon 315 (ACC-->AACC), resulting in the appeara nce of a new stop codon in codon 322, The family study disclosed that her brother and sister had the same frame shift mutations in homozygot e and heterozygote, respectively.