PMID- 10620137 OWN - NLM STAT- MEDLINE DCOM- 20000309 LR - 20211203 IS - 0022-202X (Print) IS - 0022-202X (Linking) VI - 114 IP - 1 DP - 2000 Jan TI - A novel asparagine-->aspartic acid mutation in the rod 1A domain in keratin 2e in a Japanese family with ichthyosis bullosa of Siemens. PG - 193-5 AB - Ichthyosis bullosa of Siemens is a unique type of congenital ichthyosis characterized by mild hyperkeratosis over the flexural areas and blister formation after mechanical trauma and superficial denuded areas in the hyperkeratotic skin. Recently, mutations in the helix initiation or termination motifs of keratin 2e (KRT2E) have been described in ichthyosis bullosa of Siemens patients. The majority of the mutations reported to date lie in the 2B region. We report a novel amino acid substitution mutation (asparagine-->aspartic acid) in codon 192 at the conserved 1A helix initiation site of the rod domain of KRT2E in a Japanese family with ichthyosis bullosa of Siemens. Our data indicate aspartic acid substitution in codon 192 in the 1A helix initiation site is deleterious to keratin filament network integrity and leads to ichthyosis bullosa of Siemens phenotype. FAU - Takizawa, Y AU - Takizawa Y AD - Department of Dermatology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan. takizawa@med.keio.ac.jp FAU - Akiyama, M AU - Akiyama M FAU - Nagashima, M AU - Nagashima M FAU - Shimizu, H AU - Shimizu H LA - eng PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Invest Dermatol JT - The Journal of investigative dermatology JID - 0426720 RN - 0 (KRT2 protein, human) RN - 0 (Keratin-2) RN - 68238-35-7 (Keratins) SB - IM MH - Amino Acid Sequence/genetics MH - Amino Acid Substitution/*genetics MH - Asians/*genetics MH - Base Sequence/genetics MH - Female MH - Humans MH - Ichthyosis/*genetics/pathology MH - Japan MH - Keratin-2 MH - Keratins/*genetics MH - Middle Aged MH - Molecular Sequence Data MH - Mutation/*genetics MH - Pedigree MH - Skin Diseases, Vesiculobullous/*genetics/pathology EDAT- 2000/01/05 09:00 MHDA- 2000/03/11 09:00 CRDT- 2000/01/05 09:00 PHST- 2000/01/05 09:00 [pubmed] PHST- 2000/03/11 09:00 [medline] PHST- 2000/01/05 09:00 [entrez] AID - S0022-202X(15)40752-3 [pii] AID - 10.1046/j.1523-1747.2000.00817.x [doi] PST - ppublish SO - J Invest Dermatol. 2000 Jan;114(1):193-5. doi: 10.1046/j.1523-1747.2000.00817.x.