NM_005502.4:c.422-161T>C

Variant names:

• chr9-104861961-A-G
• rs2249891
• NM_005502.4:c.422-161T>C

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BA1

The NM_005502.4(ABCA1):​c.422-161T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.275 in 151,704 control chromosomes in the GnomAD database, including 9,074 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency: Genomes: 𝑓 0.27 (9074 hom., cov: 30)
• Consequence: ABCA1 NM_005502.4 intron
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.0520
• Publications: 11 publications found

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

ACMG classification

Our verdict: Benign. The variant received -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.84).
• BP6: Variant 9-104861961-A-G is Benign according to our data. Variant chr9-104861961-A-G is described in ClinVar as Benign. ClinVar VariationId is 1229375.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.593 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005502.4. 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
	ABCA1	NM_005502.4	MANE Select	c.422-161T>C		intron	N/A	NP_005493.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ABCA1	ENST00000374736.8	TSL:1 MANE Select	c.422-161T>C		intron	N/A	ENSP00000363868.3
	ABCA1	ENST00000678995.1		c.422-161T>C		intron	N/A	ENSP00000504612.1
	ABCA1	ENST00000423487.6	TSL:2	c.422-161T>C		intron	N/A	ENSP00000416623.2

Frequencies

GnomAD3 genomes AF: 0.274 AC: 41595 AN: 151586 Hom.: 9048 Cov.: 30

Gnomad AFR AF: 0.599

Gnomad AMI AF: 0.175

Gnomad AMR AF: 0.264

Gnomad ASJ AF: 0.175

Gnomad EAS AF: 0.322

Gnomad SAS AF: 0.240

Gnomad FIN AF: 0.0809

Gnomad MID AF: 0.275

Gnomad NFE AF: 0.116

Gnomad OTH AF: 0.275

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.275 AC: 41677 AN: 151704 Hom.: 9074 Cov.: 30 AF XY: 0.273 AC XY: 20195 AN XY: 74104

African (AFR) AF: 0.599 AC: 24689 AN: 41228

American (AMR) AF: 0.264 AC: 4021 AN: 15248

Ashkenazi Jewish (ASJ) AF: 0.175 AC: 608 AN: 3468

East Asian (EAS) AF: 0.323 AC: 1664 AN: 5154

South Asian (SAS) AF: 0.240 AC: 1151 AN: 4802

European-Finnish (FIN) AF: 0.0809 AC: 852 AN: 10526

Middle Eastern (MID) AF: 0.272 AC: 80 AN: 294

European-Non Finnish (NFE) AF: 0.116 AC: 7867 AN: 67968

Other (OTH) AF: 0.278 AC: 586 AN: 2106

Alfa AF: 0.175 Hom.: 6337

Bravo AF: 0.304

Asia WGS AF: 0.296 AC: 1028 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Aug 30, 2018

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.84
CADD	Benign	4.1
DANN	Benign	0.54
PhyloP100		0.052
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs2249891; hg19: chr9-107624242; COSMIC: COSV66059377;