Genetic Variant IGFBP5:p.Phe24Leu (chr2-216694704-G-C) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_000599.4(IGFBP5):c.72C>G(p.Phe24Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000743 in 1,346,074 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 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)

Exomes 𝑓: 7.4e-7 ( 0 hom. )

Consequence

IGFBP5
NM_000599.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.191

Publications

0 publications found

Variant links:

Genes affected

IGFBP5 (HGNC:5474): (insulin like growth factor binding protein 5) Enables insulin-like growth factor I binding activity. Involved in several processes, including cellular response to cAMP; regulation of smooth muscle cell migration; and regulation of smooth muscle cell proliferation. Part of insulin-like growth factor ternary complex. Biomarker of pulmonary fibrosis. [provided by Alliance of Genome Resources, Apr 2022]

IGFBP5 links:

TESHL (HGNC:52740): (testicular germ cell expressed HSF2 interacting lncRNA)

TESHL links:

IGFBP-AS1 (HGNC:55655): (IGFBP5 antisense RNA 1)

IGFBP-AS1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.13057455).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
IGFBP5	NM_000599.4 link	c.72C>G	p.Phe24Leu	missense_variant	Exon 1 of 4	ENST00000233813.5	NP_000590.1	P24593
IGFBP-AS1	NR_187138.1 link	n.259G>C		non_coding_transcript_exon_variant	Exon 1 of 6
IGFBP-AS1	NR_187139.1 link	n.259G>C		non_coding_transcript_exon_variant	Exon 1 of 5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
IGFBP5	ENST00000233813.5 link	c.72C>G	p.Phe24Leu	missense_variant	Exon 1 of 4	1	NM_000599.4	ENSP00000233813.4		P24593

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.43e-7

AC:

AN:

1346074

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

659330

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

27888

American (AMR)

AF:

0.00

AC:

AN:

28238

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19844

East Asian (EAS)

AF:

0.00

AC:

AN:

35350

South Asian (SAS)

AF:

0.00

AC:

AN:

68028

European-Finnish (FIN)

AF:

0.00

AC:

AN:

45942

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5308

European-Non Finnish (NFE)

AF:

9.43e-7

AC:

AN:

1060120

Other (OTH)

AF:

0.00

AC:

AN:

55356

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 15, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.72C>G (p.F24L) alteration is located in exon 1 (coding exon 1) of the IGFBP5 gene. This alteration results from a C to G substitution at nucleotide position 72, causing the phenylalanine (F) at amino acid position 24 to be replaced by a leucine (L). 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

Pathogenic

0.89

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.55

CADD

Benign

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.15

T;.

Eigen

Benign

-0.83

Eigen_PC

Benign

-0.67

FATHMM_MKL

Benign

0.56

LIST_S2

Benign

0.69

T;T

M_CAP

Benign

0.028

MetaRNN

Benign

0.13

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.84

L;.

PhyloP100

0.19

PrimateAI

Uncertain

0.74

PROVEAN

Benign

-0.70

N;N

REVEL

Benign

0.039

Sift

Benign

0.13

T;T

Sift4G

Benign

0.29

T;T

Polyphen

0.0

B;.

Vest4

0.053

MutPred

0.33

Gain of disorder (P = 0.0562);Gain of disorder (P = 0.0562);

MVP

0.27

MPC

0.75

ClinPred

0.60

GERP RS

-0.016

PromoterAI

-0.00050

Neutral

(source)

Varity_R

0.076

gMVP

0.47

Mutation Taster

=59/41

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over