NM_000614.4:c.557T>G

Variant names:

• chr11-58624476-T-G
• NM_000614.4:c.557T>G

Variant summary

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

The NM_000614.4(CNTF):​c.557T>G​(p.Ile186Ser) 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. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: CNTF NM_000614.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.241

Genes affected

CNTF (HGNC:2169): (ciliary neurotrophic factor) The protein encoded by this gene is a polypeptide hormone whose actions appear to be restricted to the nervous system where it promotes neurotransmitter synthesis and neurite outgrowth in certain neuronal populations. The protein is a potent survival factor for neurons and oligodendrocytes and may be relevant in reducing tissue destruction during inflammatory attacks. A mutation in this gene, which results in aberrant splicing, leads to ciliary neurotrophic factor deficiency, but this phenotype is not causally related to neurologic disease. A read-through transcript variant composed of the upstream ZFP91 gene and CNTF sequence has been identified, but it is thought to be non-coding. Read-through transcription of ZFP91 and CNTF has also been observed in mouse. [provided by RefSeq, Oct 2010]

ZFP91-CNTF (HGNC:33441): (ZFP91-CNTF readthrough (NMD candidate)) This gene represents a read-through transcript composed of ZFP91 and CNTF sequence. This transcript is thought to be non-coding because it would be subject to nonsense-mediated mRNA decay (NMD). Read-through transcription of ZFP91 and CNTF has also been observed in mouse. [provided by RefSeq, Aug 2008]

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=0.14728737).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CNTF	NM_000614.4	c.557T>G	p.Ile186Ser	missense_variant	Exon 2 of 2	ENST00000361987.6	NP_000605.1
ZFP91-CNTF	NR_024091.1	n.2287T>G		non_coding_transcript_exon_variant	Exon 13 of 13

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CNTF	ENST00000361987.6	c.557T>G	p.Ile186Ser	missense_variant	Exon 2 of 2	1	NM_000614.4	ENSP00000355370.4
ZFP91-CNTF	ENST00000389919.8	n.*529T>G		non_coding_transcript_exon_variant	Exon 13 of 13	2		ENSP00000455911.1
ZFP91-CNTF	ENST00000389919.8	n.*529T>G		3_prime_UTR_variant	Exon 13 of 13	2		ENSP00000455911.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Aug 08, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.557T>G (p.I186S) alteration is located in exon 2 (coding exon 2) of the CNTF gene. This alteration results from a T to G substitution at nucleotide position 557, causing the isoleucine (I) at amino acid position 186 to be replaced by a serine (S). 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	Benign	0.13
BayesDel_addAF	Benign	-0.12	T
BayesDel_noAF	Benign	-0.41
CADD	Benign	14
DANN	Uncertain	0.99
DEOGEN2	Benign	0.15	T
Eigen	Benign	-0.57
Eigen_PC	Benign	-0.56
FATHMM_MKL	Benign	0.29	N
LIST_S2	Benign	0.73	T
M_CAP	Benign	0.011	T
MetaRNN	Benign	0.15	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Uncertain	2.2	M
PrimateAI	Benign	0.35	T
PROVEAN	Benign	-2.2	N
REVEL	Benign	0.076
Sift	Uncertain	0.0090	D
Sift4G	Uncertain	0.0060	D
Polyphen		0.19	B
Vest4		0.25
MutPred		0.54		Gain of disorder (P = 0.0066);
MVP		0.36
MPC		0.030
ClinPred		0.30	T
GERP RS		2.0
Varity_R		0.30
gMVP		0.12

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: chr11-58391949;