rs72653776

Variant names:

• chr16-16187210-G-A
• rs72653776
• NM_001171.6:c.1781C>T

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM1 PP3 PP5

The NM_001171.6(ABCC6):​c.1781C>T​(p.Ala594Val) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.00000411 in 1,460,982 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely pathogenic (no stars). Synonymous variant affecting the same amino acid position (i.e. A594A) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000041 (0 hom.)
• Consequence: ABCC6 NM_001171.6 missense, splice_region
• Scores: Splicing: ADA: 0.04703
• Clinical Significance: Likely pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 6.20
• Publications: 3 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, Labcorp Genetics (formerly Invitae), Orphanet, G2P
• inherited pseudoxanthoma elasticum

  Inheritance: SD Classification: DEFINITIVE Submitted by: ClinGen
• arterial calcification of infancy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM1: In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 3 benign, 9 uncertain in NM_001171.6
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.819
• PP5: Variant 16-16187210-G-A is Pathogenic according to our data. Variant chr16-16187210-G-A is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 433519.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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ABCC6	NM_001171.6	MANE Select	c.1781C>T	p.Ala594Val	missense splice_region	Exon 14 of 31	NP_001162.5
	ABCC6	NM_001440309.1		c.1781C>T	p.Ala594Val	missense splice_region	Exon 14 of 31	NP_001427238.1
	ABCC6	NM_001440310.1		c.1781C>T	p.Ala594Val	missense splice_region	Exon 14 of 30	NP_001427239.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ABCC6	ENST00000205557.12	TSL:1 MANE Select	c.1781C>T	p.Ala594Val	missense splice_region	Exon 14 of 31	ENSP00000205557.7	O95255-1
	ABCC6	ENST00000909083.1		c.1781C>T	p.Ala594Val	missense splice_region	Exon 14 of 32	ENSP00000579142.1
	ABCC6	ENST00000909090.1		c.1781C>T	p.Ala594Val	missense splice_region	Exon 14 of 32	ENSP00000579149.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00000402 AC: 1 AN: 248598 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000892

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000411 AC: 6 AN: 1460982 Hom.: 0 Cov.: 36 AF XY: 0.00000550 AC XY: 4 AN XY: 726762

African (AFR) AF: 0.00 AC: 0 AN: 33446

American (AMR) AF: 0.00 AC: 0 AN: 44648

Ashkenazi Jewish (ASJ) AF: 0.0000383 AC: 1 AN: 26112

East Asian (EAS) AF: 0.00 AC: 0 AN: 39676

South Asian (SAS) AF: 0.00 AC: 0 AN: 86114

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53234

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.00000450 AC: 5 AN: 1111630

Other (OTH) AF: 0.00 AC: 0 AN: 60356

GnomAD4 genome Cov.: 33

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
AlphaMissense	Uncertain	0.37
BayesDel_addAF	Pathogenic	0.39	D
BayesDel_noAF	Pathogenic	0.33
CADD	Uncertain	24
DANN	Pathogenic	1.0
DEOGEN2	Uncertain	0.53	D
Eigen	Uncertain	0.32
Eigen_PC	Uncertain	0.30
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Benign	0.66	T
M_CAP	Uncertain	0.17	D
MetaRNN	Pathogenic	0.82	D
MetaSVM	Uncertain	0.45	D
MutationAssessor	Uncertain	2.4	M
PhyloP100		6.2
PrimateAI	Benign	0.45	T
PROVEAN	Uncertain	-3.3	D
REVEL	Pathogenic	0.84
Sift	Uncertain	0.017	D
Sift4G	Uncertain	0.037	D
Polyphen		0.98	D
Vest4		0.69
MutPred		0.82		Loss of catalytic residue at A594 (P = 0.1215)
MVP		0.88
MPC		0.072
ClinPred		0.97	D
GERP RS		3.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.22
gMVP		0.62
Mutation Taster		=68/32	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.047
dbscSNV1_RF	Benign	0.32
Splicevardb		2.0
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: rs72653776; hg19: chr16-16281067;