19-18596895-C-A

Variant names:

• chr19-18596895-C-A
• rs137853927
• NM_004750.5:c.852G>T

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_004750.5(CRLF1):​c.852G>T​(p.Trp284Cys) 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: CRLF1 NM_004750.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.07
• Publications: 3 publications found

Genes affected

CRLF1 (HGNC:2364): (cytokine receptor like factor 1) This gene encodes a member of the cytokine type I receptor family. The protein forms a secreted complex with cardiotrophin-like cytokine factor 1 and acts on cells expressing ciliary neurotrophic factor receptors. The complex can promote survival of neuronal cells. Mutations in this gene result in Crisponi syndrome and cold-induced sweating syndrome. [provided by RefSeq, Oct 2009]

CRLF1 Gene-Disease associations (from GenCC):

• Cold-induced sweating syndrome 1

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, Ambry Genetics, Labcorp Genetics (formerly Invitae)
• cold-induced sweating syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• idiopathic achalasia

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CRLF1	NM_004750.5	c.852G>T	p.Trp284Cys	missense_variant	Exon 5 of 9	ENST00000392386.8	NP_004741.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CRLF1	ENST00000392386.8	c.852G>T	p.Trp284Cys	missense_variant	Exon 5 of 9	1	NM_004750.5	ENSP00000376188.2
CRLF1	ENST00000684169.1	c.852G>T	p.Trp284Cys	missense_variant	Exon 5 of 9			ENSP00000506849.1
CRLF1	ENST00000597131.1	c.315G>T	p.Trp105Cys	missense_variant	Exon 2 of 4	2		ENSP00000470625.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.35	D
BayesDel_noAF	Pathogenic	0.26
CADD	Pathogenic	37
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.63	D
Eigen	Pathogenic	0.87
Eigen_PC	Pathogenic	0.79
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.96	D
M_CAP	Uncertain	0.15	D
MetaRNN	Pathogenic	0.97	D
MetaSVM	Uncertain	0.18	D
MutationAssessor	Pathogenic	3.1	M
PhyloP100		7.1
PrimateAI	Pathogenic	0.82	D
PROVEAN	Pathogenic	-12	D
REVEL	Pathogenic	0.65
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.97
MutPred		0.86		Gain of methylation at K285 (P = 0.0208);
MVP		0.83
MPC		1.5
ClinPred		1.0	D
GERP RS		4.8
Varity_R		0.95
gMVP		0.82
Mutation Taster		=4/96	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.89		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.89		Position offset: 2

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

Other links and lift over

dbSNP: rs137853927; hg19: chr19-18707705;