21-42286991-C-G

Position:

• chr21-42286991-C-G

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_016818.3(ABCG1):​c.974-898C>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.634 in 151,976 control chromosomes in the GnomAD database, including 30,968 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.63 (30968 hom., cov: 31)
• Consequence: ABCG1 NM_016818.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.603

Genes affected

ABCG1 (HGNC:73): (ATP binding cassette subfamily G member 1) 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). This protein is a member of the White subfamily. It is involved in macrophage cholesterol and phospholipids transport, and may regulate cellular lipid homeostasis in other cell types. Six alternative splice variants have been identified. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.9).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.658 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ABCG1	NM_016818.3	c.974-898C>G		intron_variant		ENST00000398449.8	NP_058198.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ABCG1	ENST00000398449.8	c.974-898C>G		intron_variant		1	NM_016818.3	ENSP00000381467	P1

Frequencies

GnomAD3 genomes AF: 0.634 AC: 96231 AN: 151858 Hom.: 30943 Cov.: 31

Gnomad AFR AF: 0.665

Gnomad AMI AF: 0.734

Gnomad AMR AF: 0.658

Gnomad ASJ AF: 0.648

Gnomad EAS AF: 0.305

Gnomad SAS AF: 0.536

Gnomad FIN AF: 0.686

Gnomad MID AF: 0.592

Gnomad NFE AF: 0.631

Gnomad OTH AF: 0.634

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

GnomAD4 genome AF: 0.634 AC: 96312 AN: 151976 Hom.: 30968 Cov.: 31 AF XY: 0.635 AC XY: 47150 AN XY: 74278

Gnomad4 AFR AF: 0.665

Gnomad4 AMR AF: 0.658

Gnomad4 ASJ AF: 0.648

Gnomad4 EAS AF: 0.305

Gnomad4 SAS AF: 0.536

Gnomad4 FIN AF: 0.686

Gnomad4 NFE AF: 0.631

Gnomad4 OTH AF: 0.632

Alfa AF: 0.621 Hom.: 15971

Bravo AF: 0.634

Asia WGS AF: 0.471 AC: 1639 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
CADD	Benign	0.82
DANN	Benign	0.69

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

LitVar

Other links and lift over

dbSNP: rs425215; hg19: chr21-43707101;