[One family investigation and pathogeny research on ectrodactyly, absence of radius side part palm and split foot malformation].
OBJECTIVE
The paper is a study on the clinical symptoms and pathogeny of ectrodactyly and absence of radius side part palm and split foot malformation of some patients in one family.


METHODS
Based on the patient family investigation,a normal control group and a patient group were established. Then, polymerase chain reaction technique was used for DNA sequencing and analysis of the two groups for their exons 5-8 gene group DNA of P63 gene.


RESULTS
The medical examination found that the patients' upper bilateral limbs are short of thumbs, forefingers and middle fingers, and have radius side part palm and double lower limbs foot clefts malformation. The pathogeny research revealed that the PCR expansion pieces of the exons 5-8 of P63 are 284 bp, 259 bp, 245 bp and 259 bp respectively, and the size of the expansion piece of the patients was the same as that of the normal people group. However, a respective comparison between the DNA serial of the expansion piece of the patient and that of the normal people group and that of the P63 gene in the human gene bank showed that mutation occurs at the number 665 base pair of exon 5 of P63, namely a mutation from G to A.


CONCLUSIONS
The ectrodactyly, absence of radius side part palm and split foot malformation are caused by the mutation of base pair at number 665 of the exon 5 of P63.
Hu
Zhou-jun
ZJ
Chenzhou Maternity and Child Health Hospital, Chenzhou, Hunan, 423000 P.R. China. huzhoujun5019@vip.sina.com
Yu
Xiao-fen
XF
Li
Qi-huan
QH
Zhang
Ai-ju
AJ
Deng
Xi
X
Zhang
Ai-ying
AY
D005091:Exons / Q000235:genetics; D005260:Female; D005532:Foot Deformities, Congenital / Q000235:genetics* / Q000473:pathology; D020022:Genetic Predisposition to Disease; D006228:Hand Deformities, Congenital / Q000235:genetics* / Q000473:pathology; D006801:Humans; D008297:Male; D008565:Membrane Proteins / Q000235:genetics; D009154:Mutation; D010375:Pedigree; D016133:Polymerase Chain Reaction
C081876:CKAP4 protein, human; D008565:Membrane Proteins