7-121360119-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_014888.3(FAM3C):c.391C>G(p.Pro131Ala) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: FAM3C NM_014888.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.59

Genes affected

FAM3C (HGNC:18664): (FAM3 metabolism regulating signaling molecule C) This gene is a member of the family with sequence similarity 3 (FAM3) family and encodes a secreted protein with a GG domain. A change in expression of this protein has been noted in pancreatic cancer-derived cells. [provided by RefSeq, Mar 2010]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.26147863).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FAM3C	NM_014888.3	c.391C>G	p.Pro131Ala	missense_variant	8/10	ENST00000359943.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FAM3C	ENST00000359943.8	c.391C>G	p.Pro131Ala	missense_variant	8/10	1	NM_014888.3	P1
FAM3C	ENST00000412653.5	c.391C>G	p.Pro131Ala	missense_variant	8/8	4
FAM3C	ENST00000426156.1	c.301C>G	p.Pro101Ala	missense_variant	9/9	5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 25

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

Mar 23, 2022

The c.391C>G (p.P131A) alteration is located in exon 8 (coding exon 7) of the FAM3C gene. This alteration results from a C to G substitution at nucleotide position 391, causing the proline (P) at amino acid position 131 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	Benign	0.18
BayesDel_addAF	Benign	-0.017	T
BayesDel_noAF	Benign	-0.26
Cadd	Benign	22
Dann	Benign	0.58
DEOGEN2	Benign	0.063	T;T;.
Eigen	Benign	-0.0045
Eigen_PC	Benign	0.19
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Benign	0.85	T;T;T
M_CAP	Benign	0.010	T
MetaRNN	Benign	0.26	T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Uncertain	2.3	M;.;.
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.69	T
PROVEAN	Benign	-1.8	N;N;N
REVEL	Benign	0.15
Sift	Benign	0.71	T;T;T
Sift4G	Benign	0.67	T;.;.
Polyphen		0.029	B;.;.
Vest4		0.52
MutPred		0.34		Gain of catalytic residue at P131 (P = 0.2563);Gain of catalytic residue at P131 (P = 0.2563);.;
MVP		0.50
MPC		0.52
ClinPred		0.89	D
GERP RS		5.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0
Varity_R		0.25
gMVP		0.79

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr7-121000173;