2-96972052-A-C

Variant summary

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

The NM_001122646.3(FAM178B):c.413T>G(p.Val138Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: FAM178B NM_001122646.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -3.16

Genes affected

FAM178B (HGNC:28036): (family with sequence similarity 178 member B)

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=0.0719794).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FAM178B	NM_001122646.3	c.413T>G	p.Val138Gly	missense_variant	3/17	ENST00000490605.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FAM178B	ENST00000490605.3	c.413T>G	p.Val138Gly	missense_variant	3/17	5	NM_001122646.3	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

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

Jun 18, 2021

The c.413T>G (p.V138G) alteration is located in exon 3 (coding exon 3) of the FAM178B gene. This alteration results from a T to G substitution at nucleotide position 413, causing the valine (V) at amino acid position 138 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	Benign	0.071
BayesDel_addAF	Benign	-0.18	T
BayesDel_noAF	Benign	-0.50
Cadd	Benign	0.0020
Dann	Benign	0.47
Eigen	Benign	-1.8
Eigen_PC	Benign	-2.0
FATHMM_MKL	Benign	0.0097	N
LIST_S2	Benign	0.16	T
M_CAP	Benign	0.0085	T
MetaRNN	Benign	0.072	T
MetaSVM	Benign	-1.1	T
MutationTaster	Benign	1.0	N;N;N
PrimateAI	Benign	0.32	T
PROVEAN	Benign	-0.41	N
REVEL	Benign	0.074
Sift	Uncertain	0.022	D
Sift4G	Benign	0.24	T
Vest4		0.077
MVP		0.14
MPC		0.087
ClinPred		0.10	T
GERP RS		-8.5
gMVP		0.039

Splicing

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: chr2-97637789;