China ; Humans ; Logistic Models ; Non-alcoholic Fatty Liver Disease ; Risk Factors

OBJECTIVETo detect potential mutations in genes related with non-syndromic oculocutaneous albinism I-IV and ocular albinism type I in two couples who had given births to children with albinism.

METHODSAll exons of the non-syndromic albinism related genes TYR, OCA2, TYRP-1, MITF, SLC45A2 and GPR143 were subjected to deep sequencing. The results were verified with Sanger sequencing.

RESULTSFor the two female carriers, the coding region of the TYR gene was found to harbor a frameshift mutation c.925_926insC, which was also suspected to have been pathogenic. In one of the male partners, a nonsense mutations c.832C>T was found, which was also known to be pathogenic. Another male partner was found to harbor a TYR gene mutation c.346C>T, which was also known to be a pathogenic nonsense mutation.

CONCLUSIONThe coding region of the TYR gene c.925_926insC (p.Thr309ThrfsX9) probably underlies the OCA1 disease phenotype.

Adult ; Albinism, Oculocutaneous ; enzymology ; genetics ; Asian Continental Ancestry Group ; genetics ; Base Sequence ; China ; Exons ; Female ; Frameshift Mutation ; Humans ; Male ; Membrane Glycoproteins ; genetics ; Molecular Sequence Data ; Mutation, Missense ; Oxidoreductases ; genetics ; Pedigree