NM_178468.6:c.1733G>A

Variant names:

• chr20-35287046-C-T
• rs774312154
• NM_178468.6:c.1733G>A

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_178468.6(FAM83C):​c.1733G>A​(p.Arg578Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000162 in 1,605,054 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R578W) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000017 (0 hom.)
• Consequence: FAM83C NM_178468.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -3.96
• Publications: 0 publications found

Genes affected

FAM83C (HGNC:16121): (family with sequence similarity 83 member C) This gene encodes a member of the family with sequence similarity 83 protein family. The encoded protein may be involved in regulating MAPK signaling in cancer cells. [provided by RefSeq, Mar 2017]

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.027981818).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_178468.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FAM83C	NM_178468.6	MANE Select	c.1733G>A	p.Arg578Gln	missense	Exon 4 of 4	NP_848563.1	Q9BQN1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FAM83C	ENST00000374408.4	TSL:1 MANE Select	c.1733G>A	p.Arg578Gln	missense	Exon 4 of 4	ENSP00000363529.3	Q9BQN1

Frequencies

GnomAD3 genomes AF: 0.0000131 AC: 2 AN: 152152 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

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: 0.0000294

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000164 AC: 4 AN: 244410 AF XY: 0.0000226

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000177

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000165 AC: 24 AN: 1452902 Hom.: 0 Cov.: 34 AF XY: 0.0000180 AC XY: 13 AN XY: 723176

African (AFR) AF: 0.00 AC: 0 AN: 33478

American (AMR) AF: 0.00 AC: 0 AN: 44720

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.0000232 AC: 2 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 44556

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5764

European-Non Finnish (NFE) AF: 0.0000180 AC: 20 AN: 1111954

Other (OTH) AF: 0.0000331 AC: 2 AN: 60344

GnomAD4 genome AF: 0.0000131 AC: 2 AN: 152152 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 74322

African (AFR) AF: 0.00 AC: 0 AN: 41452

American (AMR) AF: 0.00 AC: 0 AN: 15284

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5176

South Asian (SAS) AF: 0.00 AC: 0 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10618

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000294 AC: 2 AN: 68002

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.0000338 Hom.: 0

Bravo AF: 0.00000756

ExAC AF: 0.0000247 AC: 3

EpiCase AF: 0.0000545

EpiControl AF: 0.0000593

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.070
BayesDel_addAF	Benign	-0.58	T
BayesDel_noAF	Benign	-0.89
CADD	Benign	0.011
DANN	Benign	0.64
DEOGEN2	Benign	0.0042	T
Eigen	Benign	-1.8
Eigen_PC	Benign	-1.9
FATHMM_MKL	Benign	0.016	N
LIST_S2	Benign	0.38	T
M_CAP	Benign	0.0028	T
MetaRNN	Benign	0.028	T
MetaSVM	Benign	-0.96	T
MutationAssessor	Benign	0.0	N
PhyloP100		-4.0
PrimateAI	Benign	0.21	T
PROVEAN	Benign	0.35	N
REVEL	Benign	0.0070
Sift	Benign	0.44	T
Sift4G	Benign	0.65	T
Polyphen		0.0020	B
Vest4		0.061
MutPred		0.14		Loss of MoRF binding (P = 0.0588)
MVP		0.061
MPC		0.21
ClinPred		0.028	T
GERP RS		-7.3
Varity_R		0.018
gMVP		0.051
Mutation Taster		=99/1	polymorphism

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

Other links and lift over

dbSNP: rs774312154; hg19: chr20-33874849; COSMIC: COSV65581971; COSMIC: COSV65581971;