NM_004750.5:c.1175G>A
Variant names:
Variant summary
Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate
The NM_004750.5(CRLF1):c.1175G>A(p.Arg392Gln) variant causes a missense change. The variant allele was found at a frequency of 0.0000105 in 1,612,496 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: 𝑓 0.000013 ( 0 hom., cov: 29)
Exomes 𝑓: 0.000010 ( 0 hom. )
Consequence
CRLF1
NM_004750.5 missense
NM_004750.5 missense
Scores
7
8
4
Clinical Significance
Conservation
PhyloP100: 6.82
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]
Genome browser will be placed here
ACMG classification
Classification was made for transcript
Our verdict: Uncertain_significance. The variant received 4 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.888
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes 0.0000132 AC: 2AN: 151728Hom.: 0 Cov.: 29 show subpopulations
GnomAD3 genomes
AF:
AC:
2
AN:
151728
Hom.:
Cov.:
29
Gnomad AFR
AF:
Gnomad AMI
AF:
Gnomad AMR
AF:
Gnomad ASJ
AF:
Gnomad EAS
AF:
Gnomad SAS
AF:
Gnomad FIN
AF:
Gnomad MID
AF:
Gnomad NFE
AF:
Gnomad OTH
AF:
GnomAD4 exome AF: 0.0000103 AC: 15AN: 1460768Hom.: 0 Cov.: 37 AF XY: 0.0000110 AC XY: 8AN XY: 726688 show subpopulations
GnomAD4 exome
AF:
AC:
15
AN:
1460768
Hom.:
Cov.:
37
AF XY:
AC XY:
8
AN XY:
726688
show subpopulations
African (AFR)
AF:
AC:
0
AN:
33478
American (AMR)
AF:
AC:
0
AN:
44718
Ashkenazi Jewish (ASJ)
AF:
AC:
0
AN:
26132
East Asian (EAS)
AF:
AC:
0
AN:
39700
South Asian (SAS)
AF:
AC:
0
AN:
86252
European-Finnish (FIN)
AF:
AC:
0
AN:
52350
Middle Eastern (MID)
AF:
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
AC:
15
AN:
1111988
Other (OTH)
AF:
AC:
0
AN:
60382
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.465
Heterozygous variant carriers
0
1
2
4
5
6
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
GnomAD4 genome 0.0000132 AC: 2AN: 151728Hom.: 0 Cov.: 29 AF XY: 0.0000135 AC XY: 1AN XY: 74090 show subpopulations ⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.
GnomAD4 genome
AF:
AC:
2
AN:
151728
Hom.:
Cov.:
29
AF XY:
AC XY:
1
AN XY:
74090
show subpopulations
⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.
African (AFR)
AF:
AC:
1
AN:
41296
American (AMR)
AF:
AC:
0
AN:
15250
Ashkenazi Jewish (ASJ)
AF:
AC:
0
AN:
3472
East Asian (EAS)
AF:
AC:
0
AN:
5124
South Asian (SAS)
AF:
AC:
0
AN:
4808
European-Finnish (FIN)
AF:
AC:
0
AN:
10554
Middle Eastern (MID)
AF:
AC:
0
AN:
312
European-Non Finnish (NFE)
AF:
AC:
1
AN:
67918
Other (OTH)
AF:
AC:
0
AN:
2084
⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.044843), which strongly suggests a high chance of mosaicism in these individuals.
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.350
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Alfa
AF:
Hom.:
Bravo
AF:
ESP6500AA
AF:
AC:
0
ESP6500EA
AF:
AC:
1
ExAC
AF:
AC:
1
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Inborn genetic diseases Uncertain:1
Apr 20, 2025
Ambry Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing
The c.1175G>A (p.R392Q) alteration is located in exon 7 (coding exon 7) of the CRLF1 gene. This alteration results from a G to A substitution at nucleotide position 1175, causing the arginine (R) at amino acid position 392 to be replaced by a glutamine (Q). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Uncertain
DANN
Pathogenic
DEOGEN2
Benign
T
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Uncertain
D
LIST_S2
Uncertain
D
M_CAP
Pathogenic
D
MetaRNN
Pathogenic
D
MetaSVM
Uncertain
D
MutationAssessor
Benign
L
PhyloP100
PrimateAI
Uncertain
T
PROVEAN
Benign
N
REVEL
Uncertain
Sift
Pathogenic
D
Sift4G
Pathogenic
D
Polyphen
D
Vest4
MVP
MPC
ClinPred
D
GERP RS
RBP_binding_hub_radar
RBP_regulation_power_radar
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at
Publications
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