chr14-102497668-C-G

Variant names:

• chr14-102497668-C-G
• rs763133422
• NM_014844.5:c.4030C>G

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_014844.5(TECPR2):​c.4030C>G​(p.Pro1344Ala) variant causes a missense change. The variant allele was found at a frequency of 0.00000412 in 1,456,714 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. P1344P) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000041 (0 hom.)
• Consequence: TECPR2 NM_014844.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:2
• Conservation: PhyloP100: 5.86
• 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 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.781

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.4030C>G	p.Pro1344Ala	missense	Exon 19 of 20	NP_055659.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TECPR2	ENST00000359520.12	TSL:1 MANE Select	c.4030C>G	p.Pro1344Ala	missense	Exon 19 of 20	ENSP00000352510.7
	TECPR2	ENST00000856897.1		c.4030C>G	p.Pro1344Ala	missense	Exon 19 of 20	ENSP00000526956.1
	TECPR2	ENST00000971423.1		c.3697C>G	p.Pro1233Ala	missense	Exon 17 of 18	ENSP00000641482.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.0000127 AC: 3 AN: 236446 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000296

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000947

Gnomad OTH exome AF: 0.000172

GnomAD4 exome AF: 0.00000412 AC: 6 AN: 1456714 Hom.: 0 Cov.: 32 AF XY: 0.00000276 AC XY: 2 AN XY: 724248

African (AFR) AF: 0.00 AC: 0 AN: 33382

American (AMR) AF: 0.0000226 AC: 1 AN: 44306

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26016

East Asian (EAS) AF: 0.00 AC: 0 AN: 39548

South Asian (SAS) AF: 0.00 AC: 0 AN: 85392

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 51906

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5762

European-Non Finnish (NFE) AF: 0.00000360 AC: 4 AN: 1110228

Other (OTH) AF: 0.0000166 AC: 1 AN: 60174

GnomAD4 genome Cov.: 33

Alfa AF: 0.0000256 Hom.: 0

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	2	-	Hereditary spastic paraplegia 49 (2)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Benign	-0.14	T
BayesDel_noAF	Benign	-0.35
CADD	Benign	22
DANN	Uncertain	1.0
DEOGEN2	Benign	0.13	T
Eigen	Uncertain	0.56
Eigen_PC	Uncertain	0.59
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.83	T
M_CAP	Benign	0.022	T
MetaRNN	Pathogenic	0.78	D
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.90	L
PhyloP100		5.9
PrimateAI	Uncertain	0.59	T
PROVEAN	Uncertain	-4.1	D
REVEL	Uncertain	0.32
Sift	Benign	0.17	T
Sift4G	Uncertain	0.047	D
Polyphen		1.0	D
Vest4		0.67
MutPred		0.64		Gain of catalytic residue at A1345 (P = 0.0056)
MVP		0.082
MPC		0.61
ClinPred		0.97	D
GERP RS		5.5
Varity_R		0.22
gMVP		0.59
Mutation Taster		=72/28	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: rs763133422; hg19: chr14-102964005;