8-143726247-C-T

Position:

• chr8-143726247-C-T

Variant summary

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

The NM_198488.5(FAM83H):​c.3214G>A​(p.Gly1072Ser) 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. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 34)
• Consequence: FAM83H NM_198488.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.445

Genes affected

FAM83H (HGNC:24797): (family with sequence similarity 83 member H) The protein encoded by this gene plays an important role in the structural development and calcification of tooth enamel. Defects in this gene are a cause of amelogenesis imperfecta type 3 (AI3). [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=0.07014865).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FAM83H	NM_198488.5	c.3214G>A	p.Gly1072Ser	missense_variant	5/5	ENST00000388913.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FAM83H	ENST00000388913.4	c.3214G>A	p.Gly1072Ser	missense_variant	5/5	5	NM_198488.5	P2
FAM83H	ENST00000650760.1	c.3817G>A	p.Gly1273Ser	missense_variant	5/5			A2
FAM83H	ENST00000395103.2	c.2395G>A	p.Gly799Ser	missense_variant, NMD_transcript_variant	1/2	2

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 82

GnomAD4 genome Cov.: 34

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 02, 2021

The c.3214G>A (p.G1072S) alteration is located in exon 5 (coding exon 4) of the FAM83H gene. This alteration results from a G to A substitution at nucleotide position 3214, causing the glycine (G) at amino acid position 1072 to be replaced by a serine (S). 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	0.076
BayesDel_addAF	Benign	-0.25	T
BayesDel_noAF	Benign	-0.59
CADD	Benign	13
DANN	Benign	0.97
DEOGEN2	Benign	0.0057	T
Eigen	Benign	-0.91
Eigen_PC	Benign	-0.87
FATHMM_MKL	Benign	0.081	N
M_CAP	Benign	0.013	T
MetaRNN	Benign	0.070	T
MetaSVM	Benign	-0.99	T
MutationAssessor	Benign	1.8	L
MutationTaster	Benign	1.0	N
PrimateAI	Uncertain	0.71	T
PROVEAN	Benign	-1.4	N
REVEL	Benign	0.050
Sift	Benign	0.50	T
Sift4G	Benign	0.63	T
Polyphen		0.038	B
Vest4		0.085
MutPred		0.11		Gain of glycosylation at G1072 (P = 0.0032);
MVP		0.10
MPC		0.33
ClinPred		0.12	T
GERP RS		2.9
Varity_R		0.065
gMVP		0.20

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: chr8-144808417;