Genetic Variant FAM3D:p.Ser200Gly (chr3-58634356-T-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_138805.3(FAM3D):c.598A>G(p.Ser200Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000161 in 1,613,890 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000014 ( 0 hom. )

Consequence

FAM3D
NM_138805.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.182

Variant links:

Genes affected

FAM3D (HGNC:18665): (FAM3 metabolism regulating signaling molecule D) Involved in negative regulation of insulin secretion. Predicted to be located in extracellular region. Predicted to be integral component of membrane. Predicted to be active in extracellular space. [provided by Alliance of Genome Resources, Apr 2022]

FAM3D links:

FAM3D-AS1 (HGNC:41276): (FAM3D antisense RNA 1)

FAM3D-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.016290039).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FAM3D	NM_138805.3 link	c.598A>G	p.Ser200Gly	missense_variant	Exon 10 of 10	ENST00000358781.7	NP_620160.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
FAM3D	ENST00000358781.7 link	c.598A>G	p.Ser200Gly	missense_variant	Exon 10 of 10	1	NM_138805.3	ENSP00000351632.2	Q96BQ1
FAM3D-AS1	ENST00000464125.1 link	n.737T>C		non_coding_transcript_exon_variant	Exon 4 of 4	3
FAM3D-AS1	ENST00000649469.1 link	n.511-9354T>C		intron_variant	Intron 3 of 3

Frequencies

GnomAD3 genomes

AF:

0.0000328

AC:

AN:

152242

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000327

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000680

AC:

AN:

249940

Hom.:

AF XY:

0.0000222

AC XY:

AN XY:

135094

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000496

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000144

AC:

AN:

1461648

Hom.:

Cov.:

AF XY:

0.00000688

AC XY:

AN XY:

727156

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000470

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000328

AC:

AN:

152242

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74374

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000327

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000378

ExAC

AF:

0.0000659

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 11, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.598A>G (p.S200G) alteration is located in exon 10 (coding exon 9) of the FAM3D gene. This alteration results from a A to G substitution at nucleotide position 598, causing the serine (S) at amino acid position 200 to be replaced by a glycine (G). 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

0.20

BayesDel_addAF

Benign

-0.55

BayesDel_noAF

Benign

-0.69

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Benign

0.028

Eigen

Benign

-0.93

Eigen_PC

Benign

-0.92

FATHMM_MKL

Benign

0.26

LIST_S2

Benign

0.74

M_CAP

Benign

0.0095

MetaRNN

Benign

0.016

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.1

PrimateAI

Benign

0.27

PROVEAN

Benign

-1.7

REVEL

Benign

0.023

Sift

Uncertain

0.017

Sift4G

Benign

0.18

Polyphen

0.027

Vest4

0.061

MutPred

0.26

Loss of stability (P = 0.0304);

MVP

0.16

MPC

0.096

ClinPred

0.039

GERP RS

-0.42

Varity_R

0.094

gMVP

0.31

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over