17-30792460-A-C

Position:

• chr17-30792460-A-C

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_015986.4(CRLF3):​c.939T>G​(p.Cys313Trp) 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. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 30)
• Consequence: CRLF3 NM_015986.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.58

Genes affected

CRLF3 (HGNC:17177): (cytokine receptor like factor 3) This gene encodes a cytokine receptor-like factor that may negatively regulate cell cycle progression at the G0/G1 phase. Studies of the related rat protein suggest that it may regulate neuronal morphology and synaptic vesicle biogenesis. This gene is one of several genes located in the neurofibromatosis type I tumor suppressor region on the q arm of chromosome 17, a region that is subject to microdeletions, duplications, chromosomal breaks and rearrangements. Alternative splicing of this gene results in multiple transcript variants. Related pseudogenes have been identified on chromosomes 2 and 5. [provided by RefSeq, Aug 2012]

ENSG00000266490 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.28944907).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CRLF3	NM_015986.4	c.939T>G	p.Cys313Trp	missense_variant	6/8	ENST00000324238.7	NP_057070.3
CRLF3	NR_073118.2	n.772T>G		non_coding_transcript_exon_variant	5/7
SUZ12P1	NR_144394.1	n.2889A>C		non_coding_transcript_exon_variant	9/9
SUZ12P1	NR_144395.1	n.2778A>C		non_coding_transcript_exon_variant	10/10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CRLF3	ENST00000324238.7	c.939T>G	p.Cys313Trp	missense_variant	6/8	1	NM_015986.4	ENSP00000318804.6

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 30

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

Mar 23, 2022

The c.939T>G (p.C313W) alteration is located in exon 6 (coding exon 6) of the CRLF3 gene. This alteration results from a T to G substitution at nucleotide position 939, causing the cysteine (C) at amino acid position 313 to be replaced by a tryptophan (W). 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	Uncertain	0.55
BayesDel_addAF	Uncertain	0.012	T
BayesDel_noAF	Benign	-0.22
CADD	Benign	21
DANN	Uncertain	0.99
DEOGEN2	Benign	0.26	T
Eigen	Benign	-0.34
Eigen_PC	Benign	-0.20
FATHMM_MKL	Uncertain	0.89	D
LIST_S2	Benign	0.75	T
M_CAP	Benign	0.043	D
MetaRNN	Benign	0.29	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.9	L
PrimateAI	Pathogenic	0.83	D
PROVEAN	Pathogenic	-4.6	D
REVEL	Benign	0.28
Sift	Uncertain	0.027	D
Sift4G	Uncertain	0.043	D
Polyphen		0.0070	B
Vest4		0.53
MutPred		0.67		Gain of sheet (P = 0.0827);
MVP		0.28
MPC		0.41
ClinPred		0.94	D
GERP RS		1.9
Varity_R		0.45
gMVP		0.85

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr17-29119478;