rs74315128

Variant names:

• chr16-16157674-CGTGGATCTTGAAGGACACGCCCTGCACAGCCAGCGGGAGCTCAGGTCG-C
• rs74315128
• NM_001171.6:c.3823_3870delCGACCTGAGCTCCCGCTGGCTGTGCAGGGCGTGTCCTTCAAGATCCAC

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM4 PP3

The NM_001171.6(ABCC6):​c.3823_3870delCGACCTGAGCTCCCGCTGGCTGTGCAGGGCGTGTCCTTCAAGATCCAC​(p.Arg1275_His1290del) variant causes a conservative inframe deletion change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. It is difficult to determine the true allele frequency of this variant because it is of type DEL_BIG, and the frequency of such variant types in population databases may be underestimated and unreliable. Variant has been reported in ClinVar as Uncertain significance (no stars).

• Frequency: Genomes: not found (cov: 31)
• Consequence: ABCC6 NM_001171.6 conservative_inframe_deletion
• Clinical Significance: Uncertain significance no assertion criteria provided U:1
• Conservation: PhyloP100: 9.09
• Publications: 0 publications found

Genes affected

ABCC6 (HGNC:57): (ATP binding cassette subfamily C member 6) The 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 intra-cellular membranes. ABC genes are divided into seven distinct subfamilies (ABC1, MDR/TAP, MRP, ALD, OABP, GCN20, White). The encoded protein, a member of the MRP subfamily, is involved in multi-drug resistance. Mutations in this gene cause pseudoxanthoma elasticum. Alternatively spliced transcript variants that encode different proteins have been described for this gene. [provided by RefSeq, Jul 2008]

ABCC6 Gene-Disease associations (from GenCC):

• arterial calcification, generalized, of infancy, 2

  Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
• autosomal recessive inherited pseudoxanthoma elasticum

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Laboratory for Molecular Medicine, Orphanet, Labcorp Genetics (formerly Invitae), G2P
• arterial calcification of infancy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM4: Nonframeshift variant in NON repetitive region in NM_001171.6.
• PP3: No computational evidence supports a deleterious effect, but strongly conserved according to phyloP

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ABCC6	NM_001171.6	c.3823_3870delCGACCTGAGCTCCCGCTGGCTGTGCAGGGCGTGTCCTTCAAGATCCAC	p.Arg1275_His1290del	conservative_inframe_deletion	Exon 27 of 31	ENST00000205557.12	NP_001162.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ABCC6	ENST00000205557.12	c.3823_3870delCGACCTGAGCTCCCGCTGGCTGTGCAGGGCGTGTCCTTCAAGATCCAC	p.Arg1275_His1290del	conservative_inframe_deletion	Exon 27 of 31	1	NM_001171.6	ENSP00000205557.7
ABCC6	ENST00000456970.6	n.*832_*879delCGACCTGAGCTCCCGCTGGCTGTGCAGGGCGTGTCCTTCAAGATCCAC		non_coding_transcript_exon_variant	Exon 25 of 29	2		ENSP00000405002.2
ABCC6	ENST00000622290.5	n.3823_3870delCGACCTGAGCTCCCGCTGGCTGTGCAGGGCGTGTCCTTCAAGATCCAC		non_coding_transcript_exon_variant	Exon 27 of 32	5		ENSP00000483331.2
ABCC6	ENST00000456970.6	n.*832_*879delCGACCTGAGCTCCCGCTGGCTGTGCAGGGCGTGTCCTTCAAGATCCAC		3_prime_UTR_variant	Exon 25 of 29	2		ENSP00000405002.2

Frequencies

GnomAD3 genomes Cov.: 31

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 31

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: no assertion criteria provided

Submissions by phenotype

Autosomal recessive inherited pseudoxanthoma elasticum Uncertain:1

Feb 16, 2021

PXE International

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: research

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		9.1
Mutation Taster		=7/193	disease causing (long InDel)

Splicing

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

Other links and lift over

dbSNP: rs74315128; hg19: chr16-16251531;