rs144870163

Positions:

• chr14-102414778-C-G
• chr14-102414778-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_014844.5(TECPR2):​c.623C>G​(p.Thr208Arg) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,812 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign 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. T208I) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: TECPR2 NM_014844.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.68

Genes affected

TECPR2 (HGNC:19957): (tectonin beta-propeller repeat containing 2) The protein encoded by this gene is a member of the tectonin beta-propeller repeat-containing (TECPR) family, and contains both TECPR and tryptophan-aspartic acid repeat (WD repeat) domains. This gene has been implicated in autophagy, as reduced expression levels of this gene have been associated with impaired autophagy. Recessive mutations in this gene have been associated with a hereditary form of spastic paraparesis (HSP). HSP is characterized by progressive spasticity and paralysis of the legs. There is also some evidence linking mutations in this gene with birdshot chorioretinopathy (BSCR), which results in inflammation of the choroid and retina. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Aug 2015]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.29046488).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TECPR2	NM_014844.5	c.623C>G	p.Thr208Arg	missense_variant	5/20	ENST00000359520.12
TECPR2	NM_001172631.3	c.623C>G	p.Thr208Arg	missense_variant	5/17

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TECPR2	ENST00000359520.12	c.623C>G	p.Thr208Arg	missense_variant	5/20	1	NM_014844.5	P1
TECPR2	ENST00000558678.1	c.623C>G	p.Thr208Arg	missense_variant	5/17	1
TECPR2	ENST00000561228.1	n.751C>G		non_coding_transcript_exon_variant	5/6	2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.00000398 AC: 1 AN: 251370 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 135858

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000879

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461812 Hom.: 0 Cov.: 30 AF XY: 0.00000275 AC XY: 2 AN XY: 727210

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

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.19
BayesDel_addAF	Benign	-0.079	T
BayesDel_noAF	Benign	-0.35
CADD	Uncertain	25
DANN	Uncertain	0.99
DEOGEN2	Benign	0.025	T;.
Eigen	Uncertain	0.32
Eigen_PC	Uncertain	0.34
FATHMM_MKL	Uncertain	0.97	D
LIST_S2	Uncertain	0.87	D;D
M_CAP	Benign	0.022	T
MetaRNN	Benign	0.29	T;T
MetaSVM	Benign	-0.91	T
MutationAssessor	Uncertain	2.8	M;M
MutationTaster	Benign	0.78	N;N
PrimateAI	Benign	0.39	T
PROVEAN	Uncertain	-2.4	N;N
REVEL	Benign	0.13
Sift	Uncertain	0.020	D;T
Sift4G	Uncertain	0.0030	D;D
Polyphen		0.94	P;.
Vest4		0.42
MutPred		0.27		Gain of MoRF binding (P = 0.0084);Gain of MoRF binding (P = 0.0084);
MVP		0.043
MPC		0.90
ClinPred		0.95	D
GERP RS		4.9
Varity_R		0.34
gMVP		0.50

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: rs144870163; hg19: chr14-102881115;