dbSNP rs6213: IGF1:p.Ala187Asp (chr12-102417846-G-T) – ACMG Classification: Benign (-20 pts)

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_001111285.3(IGF1):c.560C>A(p.Ala187Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00163 in 1,613,700 control chromosomes in the GnomAD database, including 47 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0084 ( 21 hom., cov: 32)

Exomes 𝑓: 0.00093 ( 26 hom. )

Consequence

IGF1
NM_001111285.3 missense

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 0.927

Publications

9 publications found

Variant links:

Genes affected

IGF1 (HGNC:5464): (insulin like growth factor 1) The protein encoded by this gene is similar to insulin in function and structure and is a member of a family of proteins involved in mediating growth and development. The encoded protein is processed from a precursor, bound by a specific receptor, and secreted. Defects in this gene are a cause of insulin-like growth factor I deficiency. Alternative splicing results in multiple transcript variants encoding different isoforms that may undergo similar processing to generate mature protein. [provided by RefSeq, Sep 2015]

IGF1 links:

LINC02456 (HGNC:53389): (long intergenic non-protein coding RNA 2456)

LINC02456 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.002417773).

BP6

Variant 12-102417846-G-T is Benign according to our data. Variant chr12-102417846-G-T is described in ClinVar as Likely_benign. ClinVar VariationId is 376935.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00842 (1281/152108) while in subpopulation AFR AF = 0.0292 (1213/41472). AF 95% confidence interval is 0.0279. There are 21 homozygotes in GnomAd4. There are 599 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 21 AR,AD gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001111285.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
IGF1	NM_000618.5	MANE Select	c.402+1663C>A		intron	N/A	NP_000609.1	Q5U743
IGF1	NM_001111285.3		c.560C>A	p.Ala187Asp	missense	Exon 4 of 4	NP_001104755.1	P05019-1
IGF1	NM_001414005.1		c.560C>A	p.Ala187Asp	missense	Exon 5 of 5	NP_001400934.1	P05019-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
IGF1	ENST00000307046.8	TSL:1	c.560C>A	p.Ala187Asp	missense	Exon 4 of 4	ENSP00000302665.8	P05019-1
IGF1	ENST00000337514.11	TSL:1 MANE Select	c.402+1663C>A		intron	N/A	ENSP00000337612.7	P05019-2
IGF1	ENST00000424202.6	TSL:1	c.354+1663C>A		intron	N/A	ENSP00000416811.2	P05019-3

Frequencies

GnomAD3 genomes

AF:

0.00842

AC:

1279

AN:

151990

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0293

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00216

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000309

Gnomad OTH

AF:

0.00669

GnomAD2 exomes

AF:

0.00205

AC:

509

AN:

248594

AF XY:

0.00154

show subpopulations

Gnomad AFR exome

AF:

0.0283

Gnomad AMR exome

AF:

0.000987

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000178

Gnomad OTH exome

AF:

0.00215

GnomAD4 exome

AF:

0.000925

AC:

1352

AN:

1461592

Hom.:

Cov.:

AF XY:

0.000847

AC XY:

616

AN XY:

727082

show subpopulations

African (AFR)

AF:

0.0307

AC:

1028

AN:

33466

American (AMR)

AF:

0.00119

AC:

AN:

44708

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39692

South Asian (SAS)

AF:

0.0000580

AC:

AN:

86232

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53378

Middle Eastern (MID)

AF:

0.00416

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000107

AC:

119

AN:

1111840

Other (OTH)

AF:

0.00204

AC:

123

AN:

60372

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

Heterozygous variant carriers

147

221

294

368

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

108

144

180

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00842

AC:

1281

AN:

152108

Hom.:

Cov.:

AF XY:

0.00806

AC XY:

599

AN XY:

74356

show subpopulations

African (AFR)

AF:

0.0292

AC:

1213

AN:

41472

American (AMR)

AF:

0.00216

AC:

AN:

15284

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5166

South Asian (SAS)

AF:

0.00

AC:

AN:

4808

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10586

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000309

AC:

AN:

68002

Other (OTH)

AF:

0.00662

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.501

Heterozygous variant carriers

123

185

246

308

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00353

Hom.:

Bravo

AF:

0.00973

ESP6500AA

AF:

0.0220

AC:

ESP6500EA

AF:

0.000140

AC:

ExAC

AF:

0.00247

AC:

298

Asia WGS

AF:

0.00375

AC:

AN:

3478

EpiCase

AF:

0.000164

EpiControl

AF:

0.000296

ClinVar

ClinVar submissions as Germline

Significance:Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.092

BayesDel_addAF

Benign

-0.39

BayesDel_noAF

Benign

-0.31

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.31

Eigen

Benign

-0.40

Eigen_PC

Benign

-0.21

FATHMM_MKL

Benign

0.58

LIST_S2

Benign

0.37

MetaRNN

Benign

0.0024

MetaSVM

Benign

-0.54

MutationAssessor

Benign

0.0

PhyloP100

0.93

PrimateAI

Benign

0.22

PROVEAN

Benign

0.50

REVEL

Uncertain

0.32

Sift

Uncertain

0.010

Sift4G

Uncertain

0.026

Polyphen

0.0

Vest4

0.19

MVP

0.95

MPC

1.2

ClinPred

0.014

GERP RS

3.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

0.95

Varity_R

0.10

Mutation Taster

=98/2

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over