PMID- 10232406 OWN - NLM STAT- MEDLINE DCOM- 19990622 LR - 20191103 IS - 0906-6705 (Print) IS - 0906-6705 (Linking) VI - 8 IP - 2 DP - 1999 Apr TI - Diagnostic dilemma of "sporadic" cases of dystrophic epidermolysis bullosa: a new dominant or mitis recessive mutation? PG - 140-2 AB - Dystrophic forms of epidermolysis bullosa (DEB), characterized by mutations in the type VII collagen gene (COL7A1), are inherited either in an autosomal dominant or autosomal recessive fashion, and sporadic, de novo cases have also been reported. Clinically, the dominant forms (DDEB) can be indistinguishable from the mild, mitis forms of recessively inherited DEB (M-RDEB). This situation poses a dilemma in case of families with 1 mildly affected individual and clinically normal parents: Is it a new dominant or mitis recessive DEB? In this study we review 2 cases with mild DEB, the parents being clinically normal. One of the cases was shown to be a compound heterozygote for 2 silent missense mutations (R2063W/G2366S), thus being diagnosed as M-RDEB. The second case had a single glycine substitution mutation (G2079E) in COL7A1 and had therefore DDEB. These findings have implications for the genetic counseling of these families concerning the risk of recurrence of the disease in subsequent pregnancies in the present and future generations. FAU - Hashimoto, I AU - Hashimoto I AD - Department of Dermatology, Hirosaki University, Japan. FAU - Kon, A AU - Kon A FAU - Tamai, K AU - Tamai K FAU - Uitto, J AU - Uitto J LA - eng GR - P01-AR38923/AR/NIAMS NIH HHS/United States PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - Denmark TA - Exp Dermatol JT - Experimental dermatology JID - 9301549 RN - 9007-34-5 (Collagen) RN - TE7660XO1C (Glycine) SB - IM CIN - Exp Dermatol. 1999 Apr;8(2):92-5. PMID: 10232398 MH - Amino Acid Substitution MH - Child MH - Collagen/*genetics MH - Epidermolysis Bullosa Dystrophica/classification/*diagnosis/*genetics MH - Female MH - *Genes, Dominant MH - *Genes, Recessive MH - Genetic Carrier Screening MH - Glycine MH - Humans MH - Male MH - *Mutation, Missense MH - Pedigree EDAT- 1999/05/08 00:00 MHDA- 1999/05/08 00:01 CRDT- 1999/05/08 00:00 PHST- 1999/05/08 00:00 [pubmed] PHST- 1999/05/08 00:01 [medline] PHST- 1999/05/08 00:00 [entrez] AID - 10.1111/j.1600-0625.1999.tb00362.x [doi] PST - ppublish SO - Exp Dermatol. 1999 Apr;8(2):140-2. doi: 10.1111/j.1600-0625.1999.tb00362.x.