Genetic Variant ABCA1:p.Arg230Ser (chr9-104858554-G-T) – ACMG Classification: Likely_benign (-1 pts)

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 0P and 1B. BP4

The NM_005502.4(ABCA1):c.688C>A(p.Arg230Ser) variant causes a missense change. The variant allele was found at a frequency of 0.0000123 in 1,461,812 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 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. R230H) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

ABCA1
NM_005502.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 4.37

Publications

0 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:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -1 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.27491334).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ABCA1	NM_005502.4 link	c.688C>A	p.Arg230Ser	missense_variant	Exon 7 of 50	ENST00000374736.8	NP_005493.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein
ABCA1	ENST00000374736.8 link	c.688C>A	p.Arg230Ser	missense_variant	Exon 7 of 50	1	NM_005502.4	ENSP00000363868.3
ABCA1	ENST00000678995.1 link	c.688C>A	p.Arg230Ser	missense_variant	Exon 7 of 50			ENSP00000504612.1
ABCA1	ENST00000423487.6 link	c.688C>A	p.Arg230Ser	missense_variant	Exon 7 of 8	2		ENSP00000416623.2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.0000123

AC:

AN:

1461812

Hom.:

Cov.:

AF XY:

0.0000151

AC XY:

AN XY:

727206

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86246

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5718

European-Non Finnish (NFE)

AF:

0.0000162

AC:

AN:

1112008

Other (OTH)

AF:

0.00

AC:

AN:

60386

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.419

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.25

BayesDel_addAF

Uncertain

0.097

BayesDel_noAF

Benign

-0.10

CADD

Benign

(source)

DANN

Benign

0.93

DEOGEN2

Benign

0.25

T;T

Eigen

Benign

-0.16

Eigen_PC

Benign

0.0087

FATHMM_MKL

Uncertain

0.84

LIST_S2

Benign

0.66

T;T

M_CAP

Benign

0.065

MetaRNN

Benign

0.27

T;T

MetaSVM

Benign

-0.32

MutationAssessor

Benign

0.84

L;.

PhyloP100

4.4

PrimateAI

Benign

0.22

PROVEAN

Benign

-0.31

N;N

REVEL

Uncertain

0.33

Sift

Benign

0.34

T;T

Sift4G

Benign

0.57

T;T

Vest4

0.27

ClinPred

0.58

GERP RS

5.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.22

gMVP

0.42

Mutation Taster

=84/16

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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over