7-45888884-T-G

Position:

• chr7-45888884-T-G

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_000596.4(IGFBP1):​c.232T>G​(p.Cys78Gly) variant causes a missense change involving the alteration of a conserved nucleotide. 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: 33)
• Consequence: IGFBP1 NM_000596.4 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 7.43

Genes affected

IGFBP1 (HGNC:5469): (insulin like growth factor binding protein 1) This gene is a member of the insulin-like growth factor binding protein (IGFBP) family and encodes a protein with an IGFBP N-terminal domain and a thyroglobulin type-I domain. The encoded protein, mainly expressed in the liver, circulates in the plasma and binds both insulin-like growth factors (IGFs) I and II, prolonging their half-lives and altering their interaction with cell surface receptors. This protein is important in cell migration and metabolism. Low levels of this protein may be associated with impaired glucose tolerance, vascular disease and hypertension in human patients. [provided by RefSeq, Aug 2017]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.993

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
IGFBP1	NM_000596.4	c.232T>G	p.Cys78Gly	missense_variant	1/4	ENST00000275525.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
IGFBP1	ENST00000275525.8	c.232T>G	p.Cys78Gly	missense_variant	1/4	1	NM_000596.4	P4
IGFBP1	ENST00000457280.5	c.232T>G	p.Cys78Gly	missense_variant	1/4	5		A2
IGFBP1	ENST00000468955.1	c.232T>G	p.Cys78Gly	missense_variant	1/3	5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Hepatocellular carcinoma Pathogenic:1

Pathogenic, no assertion criteria provided

research

Arun Kumar Laboratory, Indian Institute of Science

Jun 15, 2021

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.95
BayesDel_addAF	Pathogenic	0.54	D
BayesDel_noAF	Pathogenic	0.53
CADD	Pathogenic	27
DANN	Benign	0.96
DEOGEN2	Uncertain	0.44	T;T;T
Eigen	Uncertain	0.61
Eigen_PC	Uncertain	0.47
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Benign	0.84	T;T;T
M_CAP	Pathogenic	0.62	D
MetaRNN	Pathogenic	0.99	D;D;D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Pathogenic	3.1	M;.;.
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Pathogenic	0.90	D
PROVEAN	Pathogenic	-10	D;D;D
REVEL	Pathogenic	0.91
Sift	Uncertain	0.026	D;D;D
Sift4G	Uncertain	0.0090	D;D;D
Polyphen		1.0	D;D;D
Vest4		0.90
MutPred		0.96		Loss of stability (P = 0.0436);Loss of stability (P = 0.0436);Loss of stability (P = 0.0436);
MVP		1.0
MPC		1.2
ClinPred		1.0	D
GERP RS		5.0
Varity_R		0.84
gMVP		0.98

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: chr7-45928483;