Genetic Variant FAM32A:p.Arg72Trp (chr19-16185763-C-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_014077.4(FAM32A):c.214C>T(p.Arg72Trp) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000458 in 1,550,044 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000049 ( 0 hom. )

Consequence

FAM32A
NM_014077.4 missense, splice_region

Scores

Splicing: ADA: 0.7360

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.16

Variant links:

Genes affected

FAM32A (HGNC:24563): (family with sequence similarity 32 member A) Enables RNA binding activity. Predicted to be involved in apoptotic process. Located in nucleolus and nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

FAM32A links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.3315615).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FAM32A	NM_014077.4 link	c.214C>T	p.Arg72Trp	missense_variant, splice_region_variant	Exon 2 of 4	ENST00000263384.12	NP_054796.1	Q9Y421-1A0A024R7I4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FAM32A	ENST00000263384.12 link	c.214C>T	p.Arg72Trp	missense_variant, splice_region_variant	Exon 2 of 4	1	NM_014077.4	ENSP00000263384.6		Q9Y421-1

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152140

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000494

AC:

AN:

1397904

Hom.:

Cov.:

AF XY:

0.0000479

AC XY:

AN XY:

689594

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

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:

0.0000621

Gnomad4 OTH exome

AF:

0.0000345

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152140

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74306

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000336

Hom.:

Bravo

AF:

0.0000189

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 31, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.214C>T (p.R72W) alteration is located in exon 2 (coding exon 2) of the FAM32A gene. This alteration results from a C to T substitution at nucleotide position 214, causing the arginine (R) at amino acid position 72 to be replaced by a tryptophan (W). 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

0.94

BayesDel_addAF

Uncertain

0.062

BayesDel_noAF

Benign

-0.15

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.45

.;T;.;T

Eigen

Benign

-0.15

Eigen_PC

Benign

-0.14

FATHMM_MKL

Benign

0.23

LIST_S2

Uncertain

0.94

D;D;T;T

M_CAP

Benign

0.023

MetaRNN

Benign

0.33

T;T;T;T

MetaSVM

Benign

-0.82

MutationAssessor

Pathogenic

3.0

.;M;.;.

PrimateAI

Pathogenic

0.85

PROVEAN

Pathogenic

-4.5

.;D;.;.

REVEL

Benign

0.18

Sift

Benign

0.030

.;D;.;.

Sift4G

Benign

0.063

T;T;D;D

Polyphen

0.10

.;B;.;.

Vest4

0.74

MVP

0.32

MPC

1.1

ClinPred

0.99

GERP RS

0.91

Varity_R

0.52

gMVP

0.83

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.74

dbscSNV1_RF

Benign

0.44

SpliceAI score (max)

0.19

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