[Complex mutations of 1311 C-->T in exon 11 and 93 T-->C in intron 11 in G6PD gene].

OBJECTIVE

To investigate the relationship between complex 1311 mutation of C-->T in exon 11 and 93 T-->C in intron 11 of G6PD gene and the G6PD deficiency.

METHODS

Using NBT paper strip method to screen and quantitative NBT method to confirm G6PD deficiency. PCR-SSCP technique was used to find the abnormal exon 11 and the amplification refractory mutation system (ARMS) to identify 1311 mutation, and DNA sequencing to identify the complex mutation at 1311 in exon 11 and 93 in intron 11.

RESULTS

Abnormal band in exon 11 was found in 12 cases. DNA sequencing showed that they were 1311 mutation together with 93 mutation.

CONCLUSION

This complex mutation may be the cause of reduced activity of G6PD enzyme.