Cleft lip and palate transmembrane 1 (IPR008429)

Short name: CLPTM1

Overlapping homologous superfamilies


Family relationships


This entry includes cleft lip and palate transmembrane protein 1 (CLPTM1) and cleft lip and palate transmembrane protein 1-like protein (CLPTM1L, also known as CRR9). This entry also includes uncharacterised proteins from fungi and plants.

Clefts of the lip and/or palate (CL/P) are some of the most common birth defects. They may be categorised into syndromic or non-syndromic types, with syndromic defects having an underlying chromosomal or teratogenic cause. Around 70% of clefts are non-syndromic and individuals have no typical physical or developmental abnormalities; these clefts generally show polygenetic behaviour and complex inheritance [PMID: 16122939]. Studies have identified regions on chromosomes 19 and 11 which may be involved in non-syndromic cleft lip and palates; this included a novel gene on chromosome 19, cleft lip and palate-associated transmembrane protein 1 (CLPTM1) [PMID: 9828125]. The Poliovirus receptor-related 1 gene (PVRL1), which is located on chromosome 11, has also been shown to associate with non-syndromic cleft lip and palates [PMID: 11559849, PMID: 19715471].

Human CLPTM1L protects non-small cell lung cancer tumour cells from genotoxic apoptosis and may contribute to lung cancer risk [PMID: 24366883, PMID: 22675468].

GO terms

Biological Process

No terms assigned in this category.

Molecular Function

No terms assigned in this category.

Cellular Component

GO:0016021 integral component of membrane

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.