Pigmentary skin disorders

Gene: LTV1

I don't know

Comment on classification of gene: This gene should be rated amber as it has been implicated in inflammatory poikiloderma with hair abnormalities and acral keratoses as identified from two unrelated families harbouring the same biallelic variant and supported by functional studies.

PMID:34999892 reported four UK women of South Asian origin (three Pakistani sisters and an unrelated Indian woman) identified with homozygous variant c.503A>G, (p.Asn168Ser) and presented with poikiloderma, hair abnormalities, and acral keratoses, which the authors named as inflammatory poikiloderma with hair abnormalities and acral keratoses (IPHAK).

Both in silico modelling and splicing assays from a patient sample showed that this variant is responsible for splicing defects and defects in LTV1 alter the export of nascent ribosomal subunits to the cytoplasm in yeast.

This gene has already been associated with relevant phenotype (MIM #620199) in OMIM, but not in Gene2Phenotype.
Sources: Literature

Created: 16 Feb 2023, 2:17 p.m.

Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal

Phenotypes
Inflammatory poikiloderma with hair abnormalities and acral keratoses, OMIM:620199

Publications

• 34999892