14-102434798-G-C

Variant names:

• chr14-102434798-G-C
• rs144915346
• NM_014844.5:c.1981G>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_014844.5(TECPR2):​c.1981G>C​(p.Glu661Gln) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,084 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict 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. E661K) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: TECPR2 NM_014844.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.62
• Publications: 0 publications found

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]

TECPR2 Gene-Disease associations (from GenCC):

• hereditary spastic paraplegia 49

  Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), G2P

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.13449618).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014844.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TECPR2	NM_014844.5	MANE Select	c.1981G>C	p.Glu661Gln	missense	Exon 9 of 20	NP_055659.2
	TECPR2	NM_001172631.3		c.1981G>C	p.Glu661Gln	missense	Exon 9 of 17	NP_001166102.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TECPR2	ENST00000359520.12	TSL:1 MANE Select	c.1981G>C	p.Glu661Gln	missense	Exon 9 of 20	ENSP00000352510.7
	TECPR2	ENST00000558678.1	TSL:1	c.1981G>C	p.Glu661Gln	missense	Exon 9 of 17	ENSP00000453671.1
	TECPR2	ENST00000560060.5	TSL:4	n.-41G>C		upstream_gene	N/A

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461084 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 726830

African (AFR) AF: 0.00 AC: 0 AN: 33478

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86248

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52646

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111998

Other (OTH) AF: 0.00 AC: 0 AN: 60388

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.092
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.54
CADD	Benign	18
DANN	Uncertain	1.0
DEOGEN2	Benign	0.0095	T
Eigen	Benign	0.036
Eigen_PC	Benign	-0.025
FATHMM_MKL	Benign	0.50	N
LIST_S2	Benign	0.74	T
M_CAP	Benign	0.0069	T
MetaRNN	Benign	0.13	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.1	L
PhyloP100		3.6
PrimateAI	Benign	0.27	T
PROVEAN	Benign	-1.6	N
REVEL	Benign	0.068
Sift	Benign	0.043	D
Sift4G	Uncertain	0.042	D
Polyphen		0.99	D
Vest4		0.086
MutPred		0.16		Loss of loop (P = 0.0512)
MVP		0.082
MPC		0.31
ClinPred		0.66	D
GERP RS		5.5
Varity_R		0.16
gMVP		0.35
Mutation Taster		=91/9	polymorphism

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

Other links and lift over

dbSNP: rs144915346; hg19: chr14-102901135;