15-22873540-T-C

Variant names:

• chr15-22873540-T-C
• rs770909069
• NM_014608.6:c.3400A>G

Variant summary

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

The NM_014608.6(CYFIP1):​c.3400A>G​(p.Met1134Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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. M1134L) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: CYFIP1 NM_014608.6 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.97
• Publications: 1 publications found

Genes affected

CYFIP1 (HGNC:13759): (cytoplasmic FMR1 interacting protein 1) This gene encodes a protein that regulates cytoskeletal dynamics and protein translation. The encoded protein is a component of the WAVE regulatory complex (WRC), which promotes actin polymerization. This protein also interacts with the synaptic functional regulator FMR1 protein and translation initiation factor 4E to inhibit protein translation. A large chromosomal deletion including this gene is associated with increased risk of schizophrenia and epilepsy in human patients. Reduced expression of this gene has been observed in various human cancers and the encoded protein may inhibit tumor invasion. [provided by RefSeq, Mar 2022]

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014608.6. 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
	CYFIP1	NM_014608.6	MANE Select	c.3400A>G	p.Met1134Val	missense	Exon 29 of 31	NP_055423.1	Q7L576-1
	CYFIP1	NM_001324119.2		c.3502A>G	p.Met1168Val	missense	Exon 29 of 31	NP_001311048.1
	CYFIP1	NM_001287810.4		c.3400A>G	p.Met1134Val	missense	Exon 30 of 32	NP_001274739.1	Q7L576-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CYFIP1	ENST00000617928.5	TSL:1 MANE Select	c.3400A>G	p.Met1134Val	missense	Exon 29 of 31	ENSP00000481038.1	Q7L576-1
	CYFIP1	ENST00000610365.4	TSL:1	c.3400A>G	p.Met1134Val	missense	Exon 30 of 32	ENSP00000478779.1	Q7L576-1
	CYFIP1	ENST00000617556.4	TSL:1	c.2107A>G	p.Met703Val	missense	Exon 14 of 16	ENSP00000480525.1	Q7L576-2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.23
BayesDel_noAF	Benign	-0.26
CADD	Uncertain	23
DANN	Uncertain	0.99
DEOGEN2	Benign	0.11	T
LIST_S2	Pathogenic	0.98	D
MetaRNN	Uncertain	0.46	T
PhyloP100		8.0
PROVEAN	Benign	-1.6	N
Sift	Benign	0.21	T
Sift4G	Benign	0.43	T
Vest4		0.83
gMVP		0.98

Splicing

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

Other links and lift over

dbSNP: rs770909069; hg19: chr15-22999528;