rs72664236

Variant names:

• chr16-16155001-TC-T
• rs72664236
• NM_001171.6:c.3912delG

Variant summary

Our verdict is Likely pathogenic. The variant received 9 ACMG points: 9P and 0B. PVS1 PP5

The NM_001171.6(ABCC6):​c.3912delG​(p.Lys1305SerfsTer54) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000637 in 1,413,322 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely pathogenic (no stars). Variant results in nonsense mediated mRNA decay.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0000064 (0 hom.)
• Consequence: ABCC6 NM_001171.6 frameshift
• Clinical Significance: Likely pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: -0.0130
• Publications: 1 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: Likely_pathogenic. The variant received 9 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PP5: Variant 16-16155001-TC-T is Pathogenic according to our data. Variant chr16-16155001-TC-T is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 433336.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001171.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ABCC6	NM_001171.6	MANE Select	c.3912delG	p.Lys1305SerfsTer54	frameshift	Exon 28 of 31	NP_001162.5
	ABCC6	NM_001440309.1		c.3879delG	p.Lys1294SerfsTer54	frameshift	Exon 28 of 31	NP_001427238.1
	ABCC6	NM_001440310.1		c.3744delG	p.Lys1249SerfsTer54	frameshift	Exon 27 of 30	NP_001427239.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ABCC6	ENST00000205557.12	TSL:1 MANE Select	c.3912delG	p.Lys1305SerfsTer54	frameshift	Exon 28 of 31	ENSP00000205557.7
	ABCC6	ENST00000456970.6	TSL:2	n.*921delG		non_coding_transcript_exon	Exon 26 of 29	ENSP00000405002.2
	ABCC6	ENST00000576204.6	TSL:5	n.775delG		non_coding_transcript_exon	Exon 1 of 2

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 0.00000637 AC: 9 AN: 1413322 Hom.: 0 Cov.: 32 AF XY: 0.00000716 AC XY: 5 AN XY: 698716

African (AFR) AF: 0.00 AC: 0 AN: 32232

American (AMR) AF: 0.00 AC: 0 AN: 37626

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25310

East Asian (EAS) AF: 0.00 AC: 0 AN: 36860

South Asian (SAS) AF: 0.00 AC: 0 AN: 80420

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 48970

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5712

European-Non Finnish (NFE) AF: 0.00000736 AC: 8 AN: 1087602

Other (OTH) AF: 0.0000171 AC: 1 AN: 58590

GnomAD4 genome Cov.: 31

ClinVar

ClinVar submissions as Germline

Significance: Likely pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Autosomal recessive inherited pseudoxanthoma elasticum (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		-0.013
Mutation Taster		=2/198	disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs72664236; hg19: chr16-16248858;