14-44962429-C-T

Variant names:

• chr14-44962429-C-T
• rs1885198804
• NM_001308120.2:c.8C>T

Variant summary

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

The NM_001308120.2(TOGARAM1):​c.8C>T​(p.Ala3Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000711 in 1,407,336 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/20 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)
  • Exomes 𝑓: 7.1e-7 (0 hom.)
• Consequence: TOGARAM1 NM_001308120.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.94

Genes affected

TOGARAM1 (HGNC:19959): (TOG array regulator of axonemal microtubules 1) Predicted to enable microtubule binding activity. Predicted to be involved in organelle assembly and positive regulation of microtubule polymerization. Predicted to be located in ciliary basal body. Predicted to be active in cilium and microtubule cytoskeleton. Predicted to colocalize with microtubule. Implicated in Joubert syndrome. [provided by Alliance of Genome Resources, Apr 2022]

KLHL28 (HGNC:19741): (kelch like family member 28)

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=0.08217633).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TOGARAM1	NM_001308120.2	c.8C>T	p.Ala3Val	missense_variant	Exon 1 of 20	ENST00000361462.7	NP_001295049.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TOGARAM1	ENST00000361462.7	c.8C>T	p.Ala3Val	missense_variant	Exon 1 of 20	1	NM_001308120.2	ENSP00000354917.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 7.11e-7 AC: 1 AN: 1407336 Hom.: 0 Cov.: 31 AF XY: 0.00000144 AC XY: 1 AN XY: 695408

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000254

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Feb 17, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.8C>T (p.A3V) alteration is located in exon 1 (coding exon 1) of the FAM179B gene. This alteration results from a C to T substitution at nucleotide position 8, causing the alanine (A) at amino acid position 3 to be replaced by a valine (V). 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	0.33
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.39
CADD	Benign	23
DANN	Uncertain	1.0
DEOGEN2	Benign	0.0082	T;T
Eigen	Benign	-0.23
Eigen_PC	Benign	-0.061
FATHMM_MKL	Benign	0.50	D
LIST_S2	Benign	0.82	T;T
M_CAP	Benign	0.0032	T
MetaRNN	Benign	0.082	T;T
MetaSVM	Benign	-1.0	T
PrimateAI	Uncertain	0.48	T
PROVEAN	Benign	-0.81	N;N
REVEL	Benign	0.029
Sift	Uncertain	0.0030	D;.
Sift4G	Benign	0.25	T;T
Polyphen		0.0	B;B
Vest4		0.18
MutPred		0.21		Loss of relative solvent accessibility (P = 0.0186);Loss of relative solvent accessibility (P = 0.0186);
MVP		0.18
MPC		0.16
ClinPred		0.87	D
GERP RS		4.0
Varity_R		0.094
gMVP		0.38

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

LitVar

Other links and lift over

dbSNP: rs1885198804; hg19: chr14-45431632;