22-36256991-C-T

Position:

• chr22-36256991-C-T

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BS1 BS2

The NM_003661.4(APOL1):​c.45-92C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000965 in 1,399,672 control chromosomes in the GnomAD database, including 12 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.0043 (8 hom., cov: 32)
  • Exomes 𝑓: 0.00055 (4 hom.)
• Consequence: APOL1 NM_003661.4 intron
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.141

Genes affected

APOL1 (HGNC:618): (apolipoprotein L1) This gene encodes a secreted high density lipoprotein which binds to apolipoprotein A-I. Apolipoprotein A-I is a relatively abundant plasma protein and is the major apoprotein of HDL. It is involved in the formation of most cholesteryl esters in plasma and also promotes efflux of cholesterol from cells. This apolipoprotein L family member may play a role in lipid exchange and transport throughout the body, as well as in reverse cholesterol transport from peripheral cells to the liver. Several different transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Nov 2008]

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.91).
• BP6: Variant 22-36256991-C-T is Benign according to our data. Variant chr22-36256991-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 1317542.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population afr. gnomad4_exome allele frequency = 0.000554 (691/1247354) while in subpopulation AFR AF= 0.0184 (531/28854). AF 95% confidence interval is 0.0171. There are 4 homozygotes in gnomad4_exome. There are 295 alleles in male gnomad4_exome subpopulation. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 8 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
APOL1	NM_003661.4	c.45-92C>T		intron_variant		ENST00000397278.8	NP_003652.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
APOL1	ENST00000397278.8	c.45-92C>T		intron_variant		1	NM_003661.4	ENSP00000380448.4

Frequencies

GnomAD3 genomes AF: 0.00432 AC: 657 AN: 152200 Hom.: 8 Cov.: 32

Gnomad AFR AF: 0.0150

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00144

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000414

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000882

Gnomad OTH AF: 0.00335

GnomAD4 exome AF: 0.000554 AC: 691 AN: 1247354 Hom.: 4 AF XY: 0.000474 AC XY: 295 AN XY: 621892

Gnomad4 AFR exome AF: 0.0184

Gnomad4 AMR exome AF: 0.00124

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000122

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000565

Gnomad4 OTH exome AF: 0.000908

GnomAD4 genome AF: 0.00433 AC: 659 AN: 152318 Hom.: 8 Cov.: 32 AF XY: 0.00411 AC XY: 306 AN XY: 74470

Gnomad4 AFR AF: 0.0150

Gnomad4 AMR AF: 0.00144

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000414

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000882

Gnomad4 OTH AF: 0.00331

Alfa AF: 0.000139 Hom.: 0

Bravo AF: 0.00485

Asia WGS AF: 0.00144 AC: 5 AN: 3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

Mar 31, 2020

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.91
CADD	Benign	2.5
DANN	Benign	0.32

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs141087521; hg19: chr22-36653037;