chr14-104701399-G-A

Position:

• chr14-104701399-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_022489.4(INF2):​c.34G>A​(p.Ala12Thr) variant causes a missense change. The variant allele was found at a frequency of 0.00000139 in 1,440,616 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: INF2 NM_022489.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.99

Genes affected

INF2 (HGNC:23791): (inverted formin 2) This gene represents a member of the formin family of proteins. It is considered a diaphanous formin due to the presence of a diaphanous inhibitory domain located at the N-terminus of the encoded protein. Studies of a similar mouse protein indicate that the protein encoded by this locus may function in polymerization and depolymerization of actin filaments. Mutations at this locus have been associated with focal segmental glomerulosclerosis 5.[provided by RefSeq, Aug 2010]

ACMG classification

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=0.32458603).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
INF2	NM_022489.4	c.34G>A	p.Ala12Thr	missense_variant	2/23	ENST00000392634.9
INF2	NM_001031714.4	c.34G>A	p.Ala12Thr	missense_variant	2/22
INF2	NM_032714.3	c.34G>A	p.Ala12Thr	missense_variant	2/5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
INF2	ENST00000392634.9	c.34G>A	p.Ala12Thr	missense_variant	2/23	5	NM_022489.4	P4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000139 AC: 2 AN: 1440616 Hom.: 0 Cov.: 31 AF XY: 0.00000280 AC XY: 2 AN XY: 714590

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: 9.08e-7

Gnomad4 OTH exome AF: 0.0000168

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Focal segmental glomerulosclerosis 5;C4302667:Charcot-Marie-Tooth disease dominant intermediate E Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Sep 23, 2022

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt INF2 protein function. ClinVar contains an entry for this variant (Variation ID: 962106). This variant has not been reported in the literature in individuals affected with INF2-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 12 of the INF2 protein (p.Ala12Thr). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.078
BayesDel_addAF	Benign	-0.029	T
BayesDel_noAF	Benign	-0.28
CADD	Uncertain	23
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.067	.;.;T
Eigen	Uncertain	0.36
Eigen_PC	Uncertain	0.30
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Benign	0.75	T;T;T
M_CAP	Benign	0.068	D
MetaRNN	Benign	0.32	T;T;T
MetaSVM	Uncertain	0.045	D
MutationAssessor	Benign	1.9	L;L;L
MutationTaster	Benign	0.92	D;D;D
PrimateAI	Uncertain	0.54	T
PROVEAN	Benign	-2.0	N;N;N
REVEL	Uncertain	0.38
Sift	Uncertain	0.0070	D;D;D
Sift4G	Uncertain	0.0080	D;D;D
Polyphen		0.99	D;.;D
Vest4		0.14
MutPred		0.29		Gain of catalytic residue at K17 (P = 0.0446);Gain of catalytic residue at K17 (P = 0.0446);Gain of catalytic residue at K17 (P = 0.0446);
MVP		0.62
MPC		2.1
ClinPred		0.85	D
GERP RS		3.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.18
gMVP		0.78

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

Other links and lift over

dbSNP: rs201814557; hg19: chr14-105167736;