rs143473036

chr9-137020766-G-Achr9-137020766-G-T

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 3P and 4B. PM2 PP2 BP4_Strong

The NM_001606.5(ABCA2):c.1193C>T(p.Thr398Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000326 in 1,596,664 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T398K) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.000079 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000028 (0 hom.)
• Consequence: ABCA2 NM_001606.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.234

Genes affected

ABCA2 (HGNC:32): (ATP binding cassette subfamily A member 2) 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, White). This protein is a member of the ABC1 subfamily. Members of the ABC1 subfamily comprise the only major ABC subfamily found exclusively in multicellular eukaryotes. This protein is highly expressed in brain tissue and may play a role in macrophage lipid metabolism and neural development. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_benign. Variant got -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, ABCA2
• BP4: Computational evidence support a benign effect (MetaRNN=0.040622264).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ABCA2	NM_001606.5	c.1193C>T	p.Thr398Met	missense_variant	9/49	ENST00000341511.11
ABCA2	NM_212533.3	c.1283C>T	p.Thr428Met	missense_variant	9/49
ABCA2	NM_001411042.1	c.1190C>T	p.Thr397Met	missense_variant	8/48
ABCA2	XM_047422921.1	c.1280C>T	p.Thr427Met	missense_variant	8/48

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ABCA2	ENST00000341511.11	c.1193C>T	p.Thr398Met	missense_variant	9/49	5	NM_001606.5	P3

Frequencies

GnomAD3 genomes AF: 0.0000788 AC: 12 AN: 152240 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000523

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000192

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.000478

GnomAD3 exomes AF: 0.0000499 AC: 11 AN: 220462 Hom.: 0 AF XY: 0.0000327 AC XY: 4 AN XY: 122344

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000122

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000119

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000500

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000277 AC: 40 AN: 1444306 Hom.: 0 Cov.: 31 AF XY: 0.0000251 AC XY: 18 AN XY: 717860

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.000229

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.000153

Gnomad4 SAS exome AF: 0.0000235

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000190

Gnomad4 OTH exome AF: 0.0000167

GnomAD4 genome AF: 0.0000788 AC: 12 AN: 152358 Hom.: 0 Cov.: 32 AF XY: 0.0000671 AC XY: 5 AN XY: 74504

Gnomad4 AFR AF: 0.0000241

Gnomad4 AMR AF: 0.000522

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.000193

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000147

Gnomad4 OTH AF: 0.000473

Bravo AF: 0.000147

ExAC AF: 0.0000252 AC: 3

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.093
BayesDel_addAF	Benign	-0.23	T
BayesDel_noAF	Benign	-0.35
Cadd	Benign	14
Dann	Benign	0.93
Eigen	Benign	-1.4
Eigen_PC	Benign	-1.4
FATHMM_MKL	Benign	0.033	N
LIST_S2	Benign	0.65	T;T;T;T
M_CAP	Uncertain	0.26	D
MetaRNN	Benign	0.041	T;T;T;T
MetaSVM	Benign	-0.84	T
MutationTaster	Benign	1.0	N;N;N
PrimateAI	Uncertain	0.55	T
PROVEAN	Benign	-0.41	N;N;N;.
REVEL	Benign	0.19
Sift	Benign	0.093	T;T;T;.
Sift4G	Benign	0.13	T;T;T;T
Polyphen		0.0	.;B;.;.
Vest4		0.046
MutPred		0.19		.;Loss of loop (P = 0.0203);.;.;
MVP		0.49
MPC		0.86
ClinPred		0.087	T
GERP RS		-3.0
Varity_R		0.011
gMVP		0.53

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs143473036; hg19: chr9-139915218;