5-115525150-A-C

Position:

• chr5-115525150-A-C

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP2

The NM_020177.3(FEM1C):​c.1012T>G​(p.Ser338Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,504 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: FEM1C NM_020177.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.27

Genes affected

FEM1C (HGNC:16933): (fem-1 homolog C) Enables ubiquitin ligase-substrate adaptor activity. Involved in ubiquitin-dependent protein catabolic process via the C-end degron rule pathway. Located in cytosol and nucleoplasm. Part of Cul2-RING ubiquitin ligase complex. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), FEM1C. . Gene score misZ 2.4311 (greater than the threshold 3.09). Trascript score misZ 3.3305 (greater than threshold 3.09). GenCC has associacion of gene with complex neurodevelopmental disorder.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
FEM1C	NM_020177.3	c.1012T>G	p.Ser338Ala	missense_variant	3/3	ENST00000274457.5	NP_064562.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
FEM1C	ENST00000274457.5	c.1012T>G	p.Ser338Ala	missense_variant	3/3	1	NM_020177.3	ENSP00000274457.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461504 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727048

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000671

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 Cov.: 32

Bravo AF: 0.0000151

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

Jul 30, 2024

The c.1012T>G (p.S338A) alteration is located in exon 3 (coding exon 2) of the FEM1C gene. This alteration results from a T to G substitution at nucleotide position 1012, causing the serine (S) at amino acid position 338 to be replaced by an alanine (A). 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	0.37
BayesDel_addAF	Uncertain	0.11	D
BayesDel_noAF	Benign	-0.090
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Benign	0.077	T
Eigen	Uncertain	0.53
Eigen_PC	Uncertain	0.60
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.78	T
M_CAP	Benign	0.020	T
MetaRNN	Uncertain	0.47	T
MetaSVM	Benign	-0.60	T
MutationAssessor	Uncertain	2.4	M
PrimateAI	Pathogenic	0.88	D
PROVEAN	Uncertain	-2.4	N
REVEL	Uncertain	0.38
Sift	Benign	0.064	T
Sift4G	Benign	0.15	T
Polyphen		0.98	D
Vest4		0.55
MutPred		0.39		Loss of disorder (P = 0.0406);
MVP		0.63
MPC		1.1
ClinPred		0.95	D
GERP RS		5.5
Varity_R		0.70
gMVP		0.65

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: rs1004165328; hg19: chr5-114860847;