19-1049270-G-T

Variant names:

• chr19-1049270-G-T
• rs4147914
• NM_019112.4:c.2385G>T

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_019112.4(ABCA7):​c.2385G>T​(p.Leu795Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as (no stars). Synonymous variant affecting the same amino acid position (i.e. L795L) has been classified as Benign.

• Frequency: Genomes: not found (cov: 30)
• Consequence: ABCA7 NM_019112.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.50
• Publications: 27 publications found

Genes affected

ABCA7 (HGNC:37): (ATP binding cassette subfamily A member 7) 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 ABC1 subfamily. Members of the ABC1 subfamily comprise the only major ABC subfamily found exclusively in multicellular eukaryotes. This full transporter has been detected predominantly in myelo-lymphatic tissues with the highest expression in peripheral leukocytes, thymus, spleen, and bone marrow. The function of this protein is not yet known; however, the expression pattern suggests a role in lipid homeostasis in cells of the immune system. [provided by RefSeq, Jul 2008]

ABCA7 Gene-Disease associations (from GenCC):

• Alzheimer disease 9

  Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.58).
• BP7: Synonymous conserved (PhyloP=1.5 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_019112.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ABCA7	NM_019112.4	MANE Select	c.2385G>T	p.Leu795Leu	synonymous	Exon 18 of 47	NP_061985.2	Q8IZY2-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ABCA7	ENST00000263094.11	TSL:5 MANE Select	c.2385G>T	p.Leu795Leu	synonymous	Exon 18 of 47	ENSP00000263094.6	Q8IZY2-1
	ABCA7	ENST00000433129.6	TSL:1	n.3065G>T		non_coding_transcript_exon	Exon 17 of 44
	ABCA7	ENST00000435683.7	TSL:5	n.-145G>T		upstream_gene	N/A	ENSP00000465322.2	A0A6E1ZGS3

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 30

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.58
CADD	Benign	4.5
DANN	Benign	0.54
PhyloP100		1.5

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.060		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: rs4147914; hg19: chr19-1049269;