15-32798832-G-C

Position:

• chr15-32798832-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001277313.2(FMN1):​c.4102C>G​(p.Arg1368Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000103 in 1,460,740 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.000010 (0 hom.)
• Consequence: FMN1 NM_001277313.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.50

Genes affected

FMN1 (HGNC:3768): (formin 1) This gene belongs to the formin homology family and encodes a protein that has a role in the formation of adherens junction and the polymerization of linear actin cables. The homologous gene in mouse is associated with limb deformity. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Sep 2015]

LOC107984089 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
FMN1	NM_001277313.2	c.4102C>G	p.Arg1368Gly	missense_variant	19/21	ENST00000616417.5	NP_001264242.1
LOC107984089	XR_002957769.2	n.198-12086G>C		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
FMN1	ENST00000616417.5	c.4102C>G	p.Arg1368Gly	missense_variant	19/21	5	NM_001277313.2	ENSP00000479134	A2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.0000103 AC: 15 AN: 1460740 Hom.: 0 Cov.: 31 AF XY: 0.0000110 AC XY: 8 AN XY: 726546

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: 0.0000117

Gnomad4 OTH exome AF: 0.0000331

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 10, 2022

The c.3433C>G (p.R1145G) alteration is located in exon 15 (coding exon 15) of the FMN1 gene. This alteration results from a C to G substitution at nucleotide position 3433, causing the arginine (R) at amino acid position 1145 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	Uncertain	0.42
BayesDel_addAF	Pathogenic	0.17	D
BayesDel_noAF	Uncertain	0.0
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.43	T;.;T;T
Eigen	Uncertain	0.64
Eigen_PC	Uncertain	0.63
FATHMM_MKL	Uncertain	0.90	D
M_CAP	Benign	0.039	D
MetaRNN	Uncertain	0.74	D;D;D;D
MetaSVM	Uncertain	-0.050	T
MutationAssessor	Uncertain	2.7	M;.;.;M
PrimateAI	Uncertain	0.71	T
PROVEAN	Pathogenic	-4.8	.;D;D;D
REVEL	Uncertain	0.34
Sift	Uncertain	0.0070	.;D;D;D
Sift4G	Uncertain	0.0040	D;D;D;D
Polyphen		1.0	.;D;.;.
Vest4		0.75
MutPred		0.41		.;Loss of MoRF binding (P = 0.03);.;.;
MVP		0.84
MPC		0.20
ClinPred		0.99	D
GERP RS		5.2
Varity_R		0.68
gMVP		0.54

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr15-33091033;