22-36227699-G-A

Variant names:

• chr22-36227699-G-A
• rs755354104
• NM_030882.4:c.719C>T

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_030882.4(APOL2):​c.719C>T​(p.Ala240Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,890 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A240D) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: APOL2 NM_030882.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0260
• Publications: 0 publications found

Genes affected

APOL2 (HGNC:619): (apolipoprotein L2) This gene is a member of the apolipoprotein L gene family. The encoded protein is found in the cytoplasm, where it may affect the movement of lipids or allow the binding of lipids to organelles. Two transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Jul 2008]

APOL2 Gene-Disease associations (from GenCC):

• schizophrenia

  Inheritance: AD Classification: NO_KNOWN Submitted by: Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.2989729).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_030882.4. 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
	APOL2	NM_030882.4	MANE Select	c.719C>T	p.Ala240Val	missense	Exon 5 of 5	NP_112092.2	Q9BQE5
	APOL2	NM_145637.3		c.719C>T	p.Ala240Val	missense	Exon 6 of 6	NP_663612.2	Q9BQE5

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	APOL2	ENST00000358502.10	TSL:1 MANE Select	c.719C>T	p.Ala240Val	missense	Exon 5 of 5	ENSP00000351292.5	Q9BQE5
	APOL2	ENST00000249066.10	TSL:1	c.719C>T	p.Ala240Val	missense	Exon 6 of 6	ENSP00000249066.6	Q9BQE5
	APOL2	ENST00000451256.6	TSL:2	c.1055C>T	p.Ala352Val	missense	Exon 6 of 6	ENSP00000403153.2	J3KQL8

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000401 AC: 1 AN: 249520 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000554

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461890 Hom.: 0 Cov.: 35 AF XY: 0.00 AC XY: 0 AN XY: 727246

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1112012

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.22	T
BayesDel_noAF	Benign	-0.56
CADD	Benign	4.1
DANN	Benign	0.93
DEOGEN2	Benign	0.037	T
Eigen	Benign	-1.4
Eigen_PC	Benign	-1.4
FATHMM_MKL	Benign	0.020	N
LIST_S2	Benign	0.47	T
M_CAP	Benign	0.0043	T
MetaRNN	Benign	0.30	T
MetaSVM	Benign	-0.99	T
PhyloP100		0.026
PrimateAI	Benign	0.29	T
PROVEAN	Uncertain	-2.7	D
REVEL	Benign	0.089
Sift	Benign	0.094	T
Sift4G	Benign	0.20	T
Vest4		0.13
MutPred		0.79		Loss of disorder (P = 0.0651)
MVP		0.17
MPC		0.26
ClinPred		0.065	T
GERP RS		1.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0
gMVP		0.20
Mutation Taster		=98/2	polymorphism

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: rs755354104; hg19: chr22-36623745;