NM_005502.4:c.634T>A

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_005502.4(ABCA1):c.634T>A(p.Ser212Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000774 in 1,614,190 control chromosomes in the GnomAD database, including 11 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0039 ( 5 hom., cov: 33)

Exomes 𝑓: 0.00045 ( 6 hom. )

Consequence

ABCA1
NM_005502.4 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: 1.49

Publications

11 publications found

Variant links:

Genes affected

ABCA1 (HGNC:29): (ATP binding cassette subfamily A member 1) 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. With cholesterol as its substrate, this protein functions as a cholesteral efflux pump in the cellular lipid removal pathway. Mutations in both alleles of this gene cause Tangier disease and familial high-density lipoprotein (HDL) deficiency. [provided by RefSeq, Sep 2019]

ABCA1 Gene-Disease associations (from GenCC):

hypoalphalipoproteinemia, primary, 1
Inheritance: AD Classification: DEFINITIVE, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
Tangier disease
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Orphanet
apolipoprotein A-I deficiency
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ABCA1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.003292054).

BP6

Variant 9-104858608-A-T is Benign according to our data. Variant chr9-104858608-A-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 496296.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00389 (592/152304) while in subpopulation AFR AF = 0.0133 (554/41566). AF 95% confidence interval is 0.0124. There are 5 homozygotes in GnomAd4. There are 278 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 5 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ABCA1	NM_005502.4 link	c.634T>A	p.Ser212Thr	missense_variant	Exon 7 of 50	ENST00000374736.8	NP_005493.2	O95477B7XCW9B2RUU2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
ABCA1	ENST00000374736.8 link	c.634T>A	p.Ser212Thr	missense_variant	Exon 7 of 50	1	NM_005502.4	ENSP00000363868.3	O95477
ABCA1	ENST00000678995.1 link	c.634T>A	p.Ser212Thr	missense_variant	Exon 7 of 50			ENSP00000504612.1	A0A7I2V5U0
ABCA1	ENST00000423487.6 link	c.634T>A	p.Ser212Thr	missense_variant	Exon 7 of 8	2		ENSP00000416623.2	B1AMI2

Frequencies

GnomAD3 genomes

AF:

0.00388

AC:

590

AN:

152186

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0133

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00190

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000942

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00191

GnomAD2 exomes

AF:

0.00109

AC:

275

AN:

251486

AF XY:

0.000765

show subpopulations

Gnomad AFR exome

AF:

0.0149

Gnomad AMR exome

AF:

0.000549

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000139

Gnomad NFE exome

AF:

0.0000703

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000449

AC:

657

AN:

1461886

Hom.:

Cov.:

AF XY:

0.000415

AC XY:

302

AN XY:

727242

show subpopulations

African (AFR)

AF:

0.0151

AC:

505

AN:

33480

American (AMR)

AF:

0.000581

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.0000765

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.0000812

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.0000936

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.000520

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000459

AC:

AN:

1112008

Other (OTH)

AF:

0.000960

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.494

Heterozygous variant carriers

122

163

204

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00389

AC:

592

AN:

152304

Hom.:

Cov.:

AF XY:

0.00373

AC XY:

278

AN XY:

74466

show subpopulations

African (AFR)

AF:

0.0133

AC:

554

AN:

41566

American (AMR)

AF:

0.00190

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.00

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.0000942

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000588

AC:

AN:

68024

Other (OTH)

AF:

0.00189

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

Heterozygous variant carriers

105

131

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00138

Hom.:

Bravo

AF:

0.00447

ESP6500AA

AF:

0.0136

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.00128

AC:

156

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.00

EpiControl

AF:

0.000119

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:4

Jan 30, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

May 31, 2016

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: The ABCA1 c.634T>A (p.Ser212Thr) variant involves the alteration of a non-conserved nucleotide. 4/5 in silico tools predict a benign outcome. This variant was found in 156/141780 control chromosomes (including one homozygote), predominantly observed in the African subpopulation at a frequency of 0.0138382 (144/10406). This frequency is about 1107 times the estimated maximal expected allele frequency of a pathogenic ABCA1 variant (0.0000125), suggesting this is a benign polymorphism found primarily in the populations of African origin. One internal sample carrying this variant also carries another deleterious variant PCSK9 p.Tyr142X further supporting for benign outcome. Taken together, this variant is classified as Benign. -

Sep 19, 2019

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Apr 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

ABCA1: BP4, BS1 -

ABCA1-related disorder

Benign:1

Jun 04, 2019

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Hypoalphalipoproteinemia, primary, 1

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Tangier disease

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.081

BayesDel_addAF

Benign

-0.34

BayesDel_noAF

Benign

-0.24

CADD

Benign

9.1

(source)

DANN

Benign

0.84

DEOGEN2

Benign

0.30

T;T

Eigen

Benign

-0.89

Eigen_PC

Benign

-0.84

FATHMM_MKL

Benign

0.066

LIST_S2

Benign

0.58

T;T

MetaRNN

Benign

0.0033

T;T

MetaSVM

Benign

-0.33

MutationAssessor

Benign

1.2

L;.

PhyloP100

1.5

PrimateAI

Benign

0.33

PROVEAN

Benign

-0.52

N;N

REVEL

Benign

0.13

Sift

Benign

0.42

T;D

Sift4G

Benign

0.57

T;T

Polyphen

0.037

B;.

Vest4

0.081

MVP

0.85

MPC

0.16

ClinPred

0.00090

GERP RS

2.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.10

gMVP

0.29

Mutation Taster

=100/0

polymorphism

(source)

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over