MUTATION | -195 (C->G) Agamma; the Brazilian nd-HPFH | ||
---|---|---|---|
IDENTIFICATION | Amplification; DNA sequencing | ||
HEMATOLOGY IN HETEROZYGOTE(S) | Normal: Hb F 4.5; 4.7; 7.0%; Ggamma 13.9; 9.3; 9.7%; Hb A2 2.15% | ||
HEMATOLOGY IN HOMOZYGOTE(S) | Not observed | ||
OCCURRENCE | In a Brazilian family (Caucasian) | ||
HAPLOTYPE | Not determined | ||
FOUND IN COMBINATION WITH ABNORMAL HB(S) | The second chromosome carries a 4 bp deletion (-225 through -222 Agamma) | ||
FOUND IN COMBINATION WITH BETA-THAL ALLELE(S) | Not observed | ||
MECHANISM | This mutation might, to some extent, alter the binding of transacting factor(s) [see also -202 (C->G) Ggamma) |
REFERENCES | |||
1. | Costa, F.F., Zago, M.A., Cheng, G., Nechtman, J.F., Stoming, T.A., and Huisman, T.H.J.: Blood, 76: 1896, 1990. |