7-157006499-G-A

Variant names:

• chr7-157006499-G-A
• NM_005515.4:c.832C>T

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM2 PP3_Strong PP5

The NM_005515.4(MNX1):​c.832C>T​(p.Leu278Phe) 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. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: MNX1 NM_005515.4 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1 U:1
• Conservation: PhyloP100: 3.88

Genes affected

MNX1 (HGNC:4979): (motor neuron and pancreas homeobox 1) This gene encodes a nuclear protein, which contains a homeobox domain and is a transcription factor. Mutations in this gene result in Currarino syndrome, an autosomic dominant congenital malformation. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2009]

MNX1-AS2 (HGNC:40278): (MNX1 antisense RNA 2)

ACMG classification

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.948
• PP5: Variant 7-157006499-G-A is Pathogenic according to our data. Variant chr7-157006499-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 1314025.We mark this variant Likely_pathogenic, oryginal submissions are: {Likely_pathogenic=1, Uncertain_significance=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MNX1	NM_005515.4	c.832C>T	p.Leu278Phe	missense_variant	Exon 2 of 3	ENST00000252971.11	NP_005506.3
MNX1	NM_001165255.2	c.196C>T	p.Leu66Phe	missense_variant	Exon 2 of 3		NP_001158727.1
MNX1-AS2	NR_147077.1	n.118+75G>A		intron_variant	Intron 1 of 1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MNX1	ENST00000252971.11	c.832C>T	p.Leu278Phe	missense_variant	Exon 2 of 3	1	NM_005515.4	ENSP00000252971.5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:1 Uncertain:1

Revision: criteria provided, conflicting classifications

Submissions by phenotype

not provided Pathogenic:1 Uncertain:1

Jan 12, 2021

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Not observed in large population cohorts (Lek et al., 2016); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; A different missense change at this residue (p.Leu278Pro) has been reported in in the published literature (Merello et al., 2013) -

Dec 07, 2017

Genetic Services Laboratory, University of Chicago

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.38	D
BayesDel_noAF	Pathogenic	0.31
CADD	Pathogenic	32
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.97	.;D;.
Eigen	Pathogenic	0.82
Eigen_PC	Pathogenic	0.67
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Uncertain	0.95	D;D;D
M_CAP	Pathogenic	0.56	D
MetaRNN	Pathogenic	0.95	D;D;D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Pathogenic	3.5	.;M;.
PrimateAI	Pathogenic	0.87	D
PROVEAN	Uncertain	-4.0	D;D;D
REVEL	Pathogenic	0.87
Sift	Pathogenic	0.0	D;D;D
Sift4G	Pathogenic	0.0	D;D;.
Polyphen		1.0	.;D;.
Vest4		0.74
MutPred		0.84		.;Loss of MoRF binding (P = 0.1254);.;
MVP		0.98
ClinPred		1.0	D
GERP RS		4.0
Varity_R		0.81
gMVP		0.91

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: chr7-156799193;