16-2500855-G-T

Variant names:

• chr16-2500855-G-T
• NM_001199107.2:c.1577G>T

Variant summary

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

The NM_001199107.2(TBC1D24):​c.1577G>T​(p.Arg526Leu) variant causes a missense change. The variant allele was found at a frequency of 0.000000686 in 1,457,376 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. R526C) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: TBC1D24 NM_001199107.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.83

Genes affected

TBC1D24 (HGNC:29203): (TBC1 domain family member 24) This gene encodes a protein with a conserved domain, referred to as the TBC domain, characteristic of proteins which interact with GTPases. TBC domain proteins may serve as GTPase-activating proteins for a particular group of GTPases, the Rab (Ras-related proteins in brain) small GTPases which are involved in the regulation of membrane trafficking. Mutations in this gene are associated with familial infantile myoclonic epilepsy. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2011]

ENSG00000260272 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TBC1D24	NM_001199107.2	c.1577G>T	p.Arg526Leu	missense_variant	Exon 8 of 8	ENST00000646147.1	NP_001186036.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TBC1D24	ENST00000646147.1	c.1577G>T	p.Arg526Leu	missense_variant	Exon 8 of 8		NM_001199107.2	ENSP00000494678.1
ENSG00000260272	ENST00000564543.1	c.965+3742G>T		intron_variant	Intron 1 of 2	2		ENSP00000455547.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.86e-7 AC: 1 AN: 1457376 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 725260

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.26
BayesDel_addAF	Benign	-0.012	T
BayesDel_noAF	Benign	-0.25
CADD	Uncertain	24
DANN	Uncertain	0.98
DEOGEN2	Benign	0.087	.;T;T;.
Eigen	Uncertain	0.35
Eigen_PC	Uncertain	0.33
FATHMM_MKL	Uncertain	0.89	D
LIST_S2	Uncertain	0.91	.;.;D;D
M_CAP	Benign	0.028	D
MetaRNN	Uncertain	0.45	T;T;T;T
MetaSVM	Benign	-0.88	T
MutationAssessor	Uncertain	2.4	.;M;M;.
PrimateAI	Benign	0.43	T
PROVEAN	Uncertain	-2.7	D;.;D;.
REVEL	Benign	0.15
Sift	Benign	0.065	T;.;T;.
Sift4G	Benign	0.44	T;.;T;T
Polyphen		0.92	P;P;P;P
Vest4		0.53
MutPred		0.62		.;Loss of disorder (P = 0.0416);Loss of disorder (P = 0.0416);.;
MVP		0.79
MPC		0.84
ClinPred		0.96	D
GERP RS		3.6
Varity_R		0.55
gMVP		0.71

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: chr16-2550856;