10-49132128-C-A

Variant names:

• chr10-49132128-C-A
• rs554383371
• NM_001164484.2:c.337G>T

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_001164484.2(FAM170B):​c.337G>T​(p.Val113Leu) variant causes a missense change. The variant allele was found at a frequency of 0.000000715 in 1,399,398 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V113M) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 7.1e-7 (0 hom.)
• Consequence: FAM170B NM_001164484.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.90
• Publications: 0 publications found

Genes affected

FAM170B (HGNC:19736): (family with sequence similarity 170 member B) Predicted to be involved in fertilization; positive regulation of acrosome reaction; and regulation of fertilization. Located in acrosomal vesicle. [provided by Alliance of Genome Resources, Apr 2022]

FAM170B-AS1 (HGNC:45006): (FAM170B antisense RNA 1)

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.851

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001164484.2. 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
	FAM170B	NM_001164484.2	MANE Select	c.337G>T	p.Val113Leu	missense	Exon 2 of 2	NP_001157956.1	A6NMN3
	FAM170B-AS1	NR_038973.1		n.439-3528C>A		intron	N/A

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FAM170B	ENST00000311787.6	TSL:1 MANE Select	c.337G>T	p.Val113Leu	missense	Exon 2 of 2	ENSP00000308292.6	A6NMN3
	FAM170B-AS1	ENST00000435809.2	TSL:3	n.424-3749C>A		intron	N/A
	FAM170B-AS1	ENST00000442525.5	TSL:2	n.439-3528C>A		intron	N/A

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 7.15e-7 AC: 1 AN: 1399398 Hom.: 0 Cov.: 39 AF XY: 0.00 AC XY: 0 AN XY: 690192

African (AFR) AF: 0.00 AC: 0 AN: 31598

American (AMR) AF: 0.00 AC: 0 AN: 35704

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25182

East Asian (EAS) AF: 0.00 AC: 0 AN: 35738

South Asian (SAS) AF: 0.00 AC: 0 AN: 79234

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 49280

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5698

European-Non Finnish (NFE) AF: 9.27e-7 AC: 1 AN: 1078962

Other (OTH) AF: 0.00 AC: 0 AN: 58002

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.72
BayesDel_addAF	Benign	0.0075	T
BayesDel_noAF	Benign	-0.23
CADD	Benign	22
DANN	Uncertain	1.0
DEOGEN2	Benign	0.18	T
Eigen	Uncertain	0.51
Eigen_PC	Uncertain	0.43
FATHMM_MKL	Uncertain	0.89	D
LIST_S2	Benign	0.58	T
M_CAP	Benign	0.045	D
MetaRNN	Pathogenic	0.85	D
MetaSVM	Benign	-0.72	T
MutationAssessor	Uncertain	2.5	M
PhyloP100		3.9
PrimateAI	Uncertain	0.58	T
PROVEAN	Uncertain	-2.9	D
REVEL	Benign	0.28
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.59
MutPred		0.75		Loss of sheet (P = 0.0228)
MVP		0.26
ClinPred		0.99	D
GERP RS		4.9
Varity_R		0.59
gMVP		0.37
Mutation Taster		=98/2	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.070		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: rs554383371; hg19: chr10-50340173;