12-56361287-A-G

Variant names:

• chr12-56361287-A-G
• rs778709568
• NM_001638.4:c.919T>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001638.4(APOF):​c.919T>C​(p.Trp307Arg) variant causes a missense 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. 16/22 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. W307G) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: APOF NM_001638.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.277
• Publications: 0 publications found

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]

ENSG00000307495 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.182051).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001638.4. 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
	APOF	NM_001638.4	MANE Select	c.919T>C	p.Trp307Arg	missense	Exon 2 of 2	NP_001629.1	Q13790

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	APOF	ENST00000398189.4	TSL:1 MANE Select	c.919T>C	p.Trp307Arg	missense	Exon 2 of 2	ENSP00000381250.3	Q13790
	APOF	ENST00000887741.1		c.958T>C	p.Trp320Arg	missense	Exon 2 of 2	ENSP00000557800.1
	APOF	ENST00000887742.1		c.904T>C	p.Trp302Arg	missense	Exon 2 of 2	ENSP00000557801.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.32
PhyloP100		0.28
Varity_R		0.33
gMVP		0.41
Mutation Taster		=97/3	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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs778709568; hg19: chr12-56755071;