GM25393

GM25393 Fibroblast from Skin, Skin

Description:

CHOROIDEREMIA; CHM
CHM GENE; CHM

Affected:

Yes

Sex:

Male

Age:

57 YR (At Sampling)

Overview

Repository

NIGMS Human Genetic Cell Repository

Subcollection

Heritable Diseases
PIGI Consented Sample

Biopsy Source

Skin

Cell Type

Fibroblast

Tissue Type

Skin

Transformant

Untransformed

Sample Source

Fibroblast from Skin, Skin

Race

White

Country of Origin

USA

Family Member

Family History

Relation to Proband

proband

Confirmation

Molecular characterization before cell line submission to CCR

ISCN

46,XY[19].arr(1-22)x2,(X,Y)x1

Species

Homo sapiens

Common Name

Human

Remarks

Clinically affected; end stage choroideremia; deteriorated vision in both eyes; severe night blindness; sensitivity to light; decreased visual fields; some loss of color vision; blunt fundus in both eyes; diffuse retinal atrophy; mottled pigmentation; nuclear sclerotic cataract (NSC) 1+ in both eyes; at 56 years of age, eye exam readings for left eye were: MD -31.96 DB (p<0.5%), PSD 2.37 DB (p<2%) and for right eye: MD -32.28 DB (p<0.5%), PSD 1.49 DB; at 57 years of age, foveal thickness measured OD 357, OS 373 and sub-retinal fluid temporal to fovea OS is stable compared to a year earlier, for left eye: MD -32.45 DB (p<0.5%), PSD 1.56 DB and no information on right eye; VC: 20/50-2 PH 20/NI, 20/200+1 PH 20/NI; MR: OD -3.25+1.50x165 20/NI; OS -375+1.25x85 20/NI; W: -3.75+1.25x125, -3.75+1.25x85; DNA sequencing revealed a novel hemizygous G>T nucleotide substitution at position +1 of intron 3 in the CHM gene which may cause aberrant splicing of the mRNA and is a probable highly penetrant disease-causing sequence variant: c.189+1 G>T (formerly reported as IVS3+1 G>T), and a non-disease-causing variant Ala117Ala GCA>GCG; assistive devices: glasses, cane; lymphoblast is GM25392; stem cell line is GM26650.