chr16-16182844-A-G

Variant names:

• chr16-16182844-A-G
• rs72653782
• NM_001171.6:c.2030T>C

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM2 PP3_Strong PP5

The NM_001171.6(ABCC6):​c.2030T>C​(p.Leu677Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: ABCC6 NM_001171.6 missense
• Clinical Significance: Likely pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 7.51
• Publications: 2 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 7 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.987
• PP5: Variant 16-16182844-A-G is Pathogenic according to our data. Variant chr16-16182844-A-G is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 433257.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.2030T>C	p.Leu677Pro	missense	Exon 16 of 31	NP_001162.5
	ABCC6	NM_001440309.1		c.2030T>C	p.Leu677Pro	missense	Exon 16 of 31	NP_001427238.1
	ABCC6	NM_001440310.1		c.2030T>C	p.Leu677Pro	missense	Exon 16 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.2030T>C	p.Leu677Pro	missense	Exon 16 of 31	ENSP00000205557.7
	ABCC6	ENST00000456970.6	TSL:2	n.2030T>C		non_coding_transcript_exon	Exon 16 of 29	ENSP00000405002.2
	ABCC6	ENST00000622290.5	TSL:5	n.2030T>C		non_coding_transcript_exon	Exon 16 of 32	ENSP00000483331.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 35

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Autosomal recessive inherited pseudoxanthoma elasticum Pathogenic:1

Mar 01, 2021

PXE International

Significance: Likely pathogenic

Review Status: no assertion criteria provided

Collection Method: research

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.74
BayesDel_addAF	Pathogenic	0.50	D
BayesDel_noAF	Pathogenic	0.47
CADD	Pathogenic	27
DANN	Pathogenic	1.0
DEOGEN2	Pathogenic	0.93	D
Eigen	Pathogenic	0.75
Eigen_PC	Pathogenic	0.69
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.97	D
M_CAP	Pathogenic	0.52	D
MetaRNN	Pathogenic	0.99	D
MetaSVM	Pathogenic	0.99	D
MutationAssessor	Pathogenic	3.2	M
PhyloP100		7.5
PrimateAI	Uncertain	0.70	T
PROVEAN	Pathogenic	-6.4	D
REVEL	Pathogenic	0.93
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.98
MutPred		0.91		Loss of stability (P = 0.0081)
MVP		0.98
MPC		0.51
ClinPred		1.0	D
GERP RS		5.0
Varity_R		0.94
gMVP		0.90
Mutation Taster		=3/97	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs72653782; hg19: chr16-16276701;