12-56361452-C-T

Position:

• chr12-56361452-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_001638.4(APOF):​c.754G>A​(p.Gly252Arg) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: APOF NM_001638.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.59

Genes affected

APOF (HGNC:615): (apolipoprotein F) The product of this gene is one of the minor apolipoproteins found in plasma. This protein forms complexes with lipoproteins and may be involved in transport and/or esterification of cholesterol. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.75

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
APOF	NM_001638.4	c.754G>A	p.Gly252Arg	missense_variant	2/2	ENST00000398189.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
APOF	ENST00000398189.4	c.754G>A	p.Gly252Arg	missense_variant	2/2	1	NM_001638.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 01, 2024

The c.754G>A (p.G252R) alteration is located in exon 2 (coding exon 2) of the APOF gene. This alteration results from a G to A substitution at nucleotide position 754, causing the glycine (G) at amino acid position 252 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.73
BayesDel_addAF	Uncertain	0.10	D
BayesDel_noAF	Benign	-0.090
CADD	Uncertain	25
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.39	T
Eigen	Uncertain	0.48
Eigen_PC	Uncertain	0.47
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Benign	0.70	T
M_CAP	Benign	0.060	D
MetaRNN	Pathogenic	0.75	D
MetaSVM	Benign	-0.77	T
MutationAssessor	Uncertain	2.5	M
MutationTaster	Benign	0.99	D;D
PrimateAI	Benign	0.40	T
PROVEAN	Pathogenic	-5.2	D
REVEL	Benign	0.22
Sift	Uncertain	0.0030	D
Sift4G	Pathogenic	0.0	D
Polyphen		0.95	P
Vest4		0.72
MutPred		0.44		Gain of MoRF binding (P = 0.0342);
MVP		0.65
MPC		0.57
ClinPred		0.99	D
GERP RS		3.7
Varity_R		0.71
gMVP		0.78

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		Details are displayed if max score is > 0.2

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr12-56755236;