| MUTATION | Codon 30 (AGG->ACG) | ||
|---|---|---|---|
| AMINO ACID REPLACEMENT | Arg->Thr | ||
| TYPE OF DELTA-THAL | delta° | ||
| MECHANISM | Abolishes splicing at the 5' site of IVS-I | ||
| IDENTIFICATION | Not defined; presumably amplification of the delta-globin gene; sequencing | ||
| % HB A2 IN HETEROZYGOTE(S) | Not reported; mutation was found in one (or more) beta-thal heterozygote(s) with normal Hb A2 level (method of Hb A2 quantitation not given) | ||
| % HB A2 IN HOMOZYGOTE(S) | Not reported | ||
| OCCURRENCE | In Italian family(ies) | ||
| HAPLOTYPE | Not determined | ||
| FOUND IN COMBINATION WITH ABNORMAL HB(S) | None | ||
| FOUND IN COMBINATION WITH DELTA-THAL ALLELE(S) | None | ||
| OTHER INFORMATION | None |
| REFERENCES | |||
| 1. | Pirastu, M., Ristaldi, M.S., Loudianos, G., Murru, S., Sciarratta, G.V., Parodi, M.I., Leone, D., Agosti, S., and Cao, A.: Ann. N.Y. Acad. Sci., 612:90, 1990. | ||