Browsing by Author "Ben Rhouma, F."
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- Gaucher disease in Tunisia: High frequency of the most common mutationsPublication . Cherif, W.; Ben Turkia, H.; Ben Rhouma, F.; Riahi, I.; Chemli, J.; Kefi, R.; Messai, H.; Amaral, O.; Miranda, M.C.; Caillaud, C.; Tebib, N.; Ben Dridi, M.F.; Abdelhak, S.
- Molecular diagnosis of Gaucher disease in TunisiaPublication . Cherif, W.; Ben Turkia, H.; Ben Rhouma, F.; Riahi, I.; Chemli, J.; Amaral, O.; Sá Miranda, M.C.; Caillaud, C.; Kaabachi, N.; Tebib, N.; Ben Dridi, M.F.[ENG] Gaucher disease is a lysosomal storage disorder caused by a deficiency of the enzyme acid b-glucosidase. In order to determine the mutation spectrum in Tunisia, we performed recurrent mutation screening in 30 Tunisian patients with Gaucher disease. Screening of recurrent mutation by PCR/RFLP and direct sequencing had shown that N370S was the most frequent mutation (22/50 mutant alleles, 44%), followed by L444P mutation, which is found in 16% (8/50 mutant alleles). The recombinant allele (RecNciI)represented 14%. Our findings revealed that the genotype N370S/RecNciI was mosst frequent in patients with childhood onset and it was associated with severe visceral involvement. The screening of these three mutations provided a simple tool for molecular diagnosis of Gaucher disease in Tunisian patients and allowed also genetic counselling for their family members.
- Mutation spectrum of Gaucher disease in Tunisia: high frequency of N370S/Rec NciI compound heterozygousPublication . Cherif, W.; Ben Turkia, H.; Tebib, N.; Amaral, O.; Ben Rhouma, F.; Abdelmoula MS, M.S.; Azzouz, H.; Caillaud, C.; Sà Miranda, M.C.; Abdelhak, S.; Ben Dridi, M.F.Gaucher disease is the most common lysosomal storage disorder, it results from the inherited deficiency of the enzyme glucocerebrosidase, the accumulation of its substrate causes many clinical manifestations. Since the discovery of GBA gene, more than 200 different mutations have been identified, but only handful mutations are recurrent (N370S, L444P and c.84insG). In order to determine the mutation spectrum in Tunisia, we performed recurrent mutation screening in ten unrelated Tunisian children with Gaucher disease. Screening of recurrent mutation by PCR/RFLP and direct sequencing, has shown that N370S is the most frequent mutation (6/20 mutant alleles, 30%), followed by recombinant allele (RecNciI) which is found in five patients (5/20 mutant alleles, 25%), the L444P mutation represent 20% (4/20 mutant alleles). Our findings revealed that five among ten studied patients, were compound heterozygous N370S/RecNciI (50%). The screening of these mutations provides a simple tool for molecular diagnosis of Gaucher disease in Tunisian patients and allows also genetic counselling for their family members.