chr17-66230006-T-G

Variant names:

• chr17-66230006-T-G
• rs8178898
• ENST00000577982.1:c.-43-584A>C

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BS1 BS2

The ENST00000577982.1(APOH):​c.-43-584A>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0104 in 152,274 control chromosomes in the GnomAD database, including 30 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 0.010 (30 hom., cov: 32)
• Consequence: APOH ENST00000577982.1 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.291
• Publications: 1 publications found

Genes affected

APOH (HGNC:616): (apolipoprotein H) Apolipoprotein H, also known as beta-2-glycoprotein I, is a component of circulating plasma lipoproteins. It has been implicated in a variety of physiologic pathways including lipoprotein metabolism, coagulation, hemostasis, and the production of antiphospholipid autoantibodies. APOH may be a required cofactor for anionic phospholipid binding by the antiphospholipid autoantibodies found in sera of many patients with lupus and primary antiphospholipid syndrome (APS). The anti-beta (2) glycoprotein I antibodies from APS patients, mediate inhibition of activated protein C which has anticoagulant properties. Because beta-2-GPI is the main autoantigen in patients with APS, the disruption of this pathway by autoantibodies may be an important mechanism for thrombosis in patients with APS.[provided by RefSeq, Dec 2019]

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.83).
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.0104 (1577/152274) while in subpopulation AFR AF = 0.036 (1497/41542). AF 95% confidence interval is 0.0345. There are 30 homozygotes in GnomAd4. There are 766 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
• BS2: High Homozygotes in GnomAd4 at 30 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
APOH	ENST00000577982.1	c.-43-584A>C		intron_variant	Intron 1 of 5	5		ENSP00000464301.1

Frequencies

GnomAD3 genomes AF: 0.0103 AC: 1562 AN: 152156 Hom.: 27 Cov.: 32

Gnomad AFR AF: 0.0358

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00341

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000414

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00318

Gnomad NFE AF: 0.0000735

Gnomad OTH AF: 0.00955

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

GnomAD4 genome AF: 0.0104 AC: 1577 AN: 152274 Hom.: 30 Cov.: 32 AF XY: 0.0103 AC XY: 766 AN XY: 74464

African (AFR) AF: 0.0360 AC: 1497 AN: 41542

American (AMR) AF: 0.00340 AC: 52 AN: 15290

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5172

South Asian (SAS) AF: 0.000414 AC: 2 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10620

Middle Eastern (MID) AF: 0.00342 AC: 1 AN: 292

European-Non Finnish (NFE) AF: 0.0000735 AC: 5 AN: 68032

Other (OTH) AF: 0.00945 AC: 20 AN: 2116

Alfa AF: 0.00649 Hom.: 5

Bravo AF: 0.0120

Asia WGS AF: 0.00318 AC: 11 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
CADD	Benign	1.6
DANN	Benign	0.65
PhyloP100		-0.29

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs8178898; hg19: chr17-64226124;