rs387906285

Positions:

• chr2-214978431-AT-A

Variant summary

Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PVS1 PM2 PP5

The NM_173076.3(ABCA12):​c.5012delA​(p.Asn1671fs) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,498 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (no stars). Variant results in nonsense mediated mRNA decay.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: ABCA12 NM_173076.3 frameshift
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 0.201

Genes affected

ABCA12 (HGNC:14637): (ATP binding cassette subfamily A member 12) The membrane-associated protein encoded by this gene is a member of the superfamily of ATP-binding cassette (ABC) transporters. ABC proteins transport various molecules across extra- and intracellular membranes. ABC genes are divided into seven distinct subfamilies (ABC1, MDR/TAP, MRP, ALD, OABP, GCN20, and White). This encoded protein is a member of the ABC1 subfamily, which is the only major ABC subfamily found exclusively in multicellular eukaryotes. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Jul 2008]

ABCA12 (HGNC:):

ACMG classification

Verdict is Pathogenic. Variant got 11 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 2-214978431-AT-A is Pathogenic according to our data. Variant chr2-214978431-AT-A is described in ClinVar as [Pathogenic]. Clinvar id is 2860.Status of the report is no_assertion_criteria_provided, 0 stars. Variant chr2-214978431-AT-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ABCA12	NM_173076.3	c.5012delA	p.Asn1671fs	frameshift_variant	33/53	ENST00000272895.12	NP_775099.2
ABCA12	NM_015657.4	c.4058delA	p.Asn1353fs	frameshift_variant	25/45		NP_056472.2
ABCA12	XM_011510951.3	c.5021delA	p.Asn1674fs	frameshift_variant	33/53		XP_011509253.1
ABCA12	NR_103740.2	n.5510delA		non_coding_transcript_exon_variant	35/55

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ABCA12	ENST00000272895.12	c.5012delA	p.Asn1671fs	frameshift_variant	33/53	1	NM_173076.3	ENSP00000272895.7
ABCA12	ENST00000389661.4	c.4058delA	p.Asn1353fs	frameshift_variant	25/45	1		ENSP00000374312.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461498 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727018

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000447

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Autosomal recessive congenital ichthyosis 4B Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

May 01, 2005

- -

Computational scores

Source: dbNSFP v4.3

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs387906285; hg19: chr2-215843155;