12-121949042-G-T

Position:

• chr12-121949042-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_144668.6(CFAP251):​c.1250G>T​(p.Arg417Leu) 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. 12/20 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. R417Q) has been classified as Benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: CFAP251 NM_144668.6 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.651

Genes affected

CFAP251 (HGNC:28506): (cilia and flagella associated protein 251) This protein encoded by this gene belongs to the WD repeat-containing family of proteins, which function in the formation of protein-protein complexes in a variety of biological pathways. This family member appears to function in the determination of mean platelet volume (MPV), and polymorphisms in this gene have been associated with variance in MPV. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Sep 2011]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.07985455).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CFAP251	NM_144668.6	c.1250G>T	p.Arg417Leu	missense_variant	8/22	ENST00000288912.9
CFAP251	NM_001178003.2	c.1250G>T	p.Arg417Leu	missense_variant	8/18

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CFAP251	ENST00000288912.9	c.1250G>T	p.Arg417Leu	missense_variant	8/22	1	NM_144668.6
CFAP251	ENST00000397454.2	c.1250G>T	p.Arg417Leu	missense_variant	8/18	1		P1
CFAP251	ENST00000543211.5	n.1374G>T		non_coding_transcript_exon_variant	1/5	3
CFAP251	ENST00000546044.1	n.359G>T		non_coding_transcript_exon_variant	4/4	3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 27

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.21
BayesDel_addAF	Benign	-0.23	T
BayesDel_noAF	Benign	-0.56
CADD	Benign	15
DANN	Uncertain	0.98
DEOGEN2	Benign	0.035	T;.
Eigen	Benign	-0.96
Eigen_PC	Benign	-0.95
FATHMM_MKL	Benign	0.081	N
LIST_S2	Benign	0.49	T;T
M_CAP	Benign	0.0077	T
MetaRNN	Benign	0.080	T;T
MetaSVM	Benign	-0.99	T
MutationTaster	Benign	1.0	N;N
PrimateAI	Benign	0.24	T
PROVEAN	Uncertain	-3.3	D;D
REVEL	Benign	0.040
Sift	Benign	0.060	T;T
Sift4G	Uncertain	0.0020	D;D
Polyphen		0.0010	B;.
Vest4		0.28
MutPred		0.45		Gain of catalytic residue at A422 (P = 0.0016);Gain of catalytic residue at A422 (P = 0.0016);
MVP		0.040
MPC		0.16
ClinPred		0.24	T
GERP RS		-0.91
Varity_R		0.14
gMVP		0.42

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: rs78910014; hg19: chr12-122386948;