Abstract
Darier disease (DD) (MIM 124200) is an autosomal
dominant skin disorder characterized by loss of adhesion
between epidermal cells and by abnormal keratinization.
We present linkage analysis showing, in four families,
key recombination events that refine the location of the
DD locus on chromosome 12q23-24.1 to a region of
!1 cM. We have constructed a YAC/P1 artificial
chromosome (PAC)/bacterial artificial chromosome
(BAC)–based physical map that encompasses this refined
DD region. The map consists of 35 YAC, 69 PAC, 16
BAC, and 2 cosmid clones that were ordered by mapping
54 anonymous sequence-tagged sites. The critical region
is estimated to be 2.4 Mb in size, with an average marker
resolution of 37.5 kb. The refinement of the critical interval
excludes the ALDH2, RPL6, PTPN11, and OAS
genes, as well as seven expressed sequence tags (ESTs)
previously mapped in the DD region. The three known
genes (ATP2A2, PPP1CC, and SCA2) and the 10 ESTs
mapped within the critical region are not obvious candidates
for the DD gene. Therefore, this detailed integrated
physical, genetic, and partial transcript map provides
an important resource for the isolation of the DD
gene and, possibly, other disease genes.
dominant skin disorder characterized by loss of adhesion
between epidermal cells and by abnormal keratinization.
We present linkage analysis showing, in four families,
key recombination events that refine the location of the
DD locus on chromosome 12q23-24.1 to a region of
!1 cM. We have constructed a YAC/P1 artificial
chromosome (PAC)/bacterial artificial chromosome
(BAC)–based physical map that encompasses this refined
DD region. The map consists of 35 YAC, 69 PAC, 16
BAC, and 2 cosmid clones that were ordered by mapping
54 anonymous sequence-tagged sites. The critical region
is estimated to be 2.4 Mb in size, with an average marker
resolution of 37.5 kb. The refinement of the critical interval
excludes the ALDH2, RPL6, PTPN11, and OAS
genes, as well as seven expressed sequence tags (ESTs)
previously mapped in the DD region. The three known
genes (ATP2A2, PPP1CC, and SCA2) and the 10 ESTs
mapped within the critical region are not obvious candidates
for the DD gene. Therefore, this detailed integrated
physical, genetic, and partial transcript map provides
an important resource for the isolation of the DD
gene and, possibly, other disease genes.
Original language | English |
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Pages (from-to) | 890-903 |
Journal | American Journal of Human Genetics |
Volume | 62 |
Issue number | 4 |
DOIs | |
Publication status | Published - 22 Jan 1998 |