NM_014844.5:c.1644T>G

Variant names:

• chr14-102434461-T-G
• rs72700613
• NM_014844.5:c.1644T>G

Variant summary

Our verdict is Benign. The variant received -16 ACMG points: 0P and 16B. BP4_Strong BP6_Very_Strong BS2

The NM_014844.5(TECPR2):​c.1644T>G​(p.Asn548Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00175 in 1,545,150 control chromosomes in the GnomAD database, including 6 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N548S) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.0011 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0018 (6 hom.)
• Consequence: TECPR2 NM_014844.5 missense
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:11 O:1
• Conservation: PhyloP100: 0.0300
• Publications: 3 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: Benign. The variant received -16 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.008535296).
• BP6: Variant 14-102434461-T-G is Benign according to our data. Variant chr14-102434461-T-G is described in ClinVar as Likely_benign. ClinVar VariationId is 408917.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS2: High Homozygotes in GnomAdExome4 at 6 AR gene

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.1644T>G	p.Asn548Lys	missense	Exon 9 of 20	NP_055659.2
	TECPR2	NM_001172631.3		c.1644T>G	p.Asn548Lys	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.1644T>G	p.Asn548Lys	missense	Exon 9 of 20	ENSP00000352510.7
	TECPR2	ENST00000558678.1	TSL:1	c.1644T>G	p.Asn548Lys	missense	Exon 9 of 17	ENSP00000453671.1

Frequencies

GnomAD3 genomes AF: 0.00114 AC: 173 AN: 152192 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.000338

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000786

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00215

Gnomad OTH AF: 0.000478

GnomAD2 exomes AF: 0.000973 AC: 189 AN: 194180 AF XY: 0.00102

Gnomad AFR exome AF: 0.000321

Gnomad AMR exome AF: 0.000548

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.000276

Gnomad NFE exome AF: 0.00179

Gnomad OTH exome AF: 0.000225

GnomAD4 exome AF: 0.00182 AC: 2538 AN: 1392840 Hom.: 6 Cov.: 30 AF XY: 0.00173 AC XY: 1187 AN XY: 686328

African (AFR) AF: 0.000225 AC: 7 AN: 31132

American (AMR) AF: 0.000516 AC: 17 AN: 32972

Ashkenazi Jewish (ASJ) AF: 0.0000471 AC: 1 AN: 21238

East Asian (EAS) AF: 0.00 AC: 0 AN: 39198

South Asian (SAS) AF: 0.00 AC: 0 AN: 74658

European-Finnish (FIN) AF: 0.000158 AC: 8 AN: 50722

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5442

European-Non Finnish (NFE) AF: 0.00223 AC: 2407 AN: 1080088

Other (OTH) AF: 0.00171 AC: 98 AN: 57390

GnomAD4 genome AF: 0.00114 AC: 173 AN: 152310 Hom.: 0 Cov.: 32 AF XY: 0.00107 AC XY: 80 AN XY: 74502

African (AFR) AF: 0.000337 AC: 14 AN: 41560

American (AMR) AF: 0.000785 AC: 12 AN: 15294

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5188

South Asian (SAS) AF: 0.00 AC: 0 AN: 4832

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10626

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00215 AC: 146 AN: 68022

Other (OTH) AF: 0.000473 AC: 1 AN: 2114

Alfa AF: 0.00146 Hom.: 0

Bravo AF: 0.00119

TwinsUK AF: 0.00216 AC: 8

ALSPAC AF: 0.00285 AC: 11

ESP6500AA AF: 0.000454 AC: 2

ESP6500EA AF: 0.00198 AC: 17

ExAC AF: 0.000975 AC: 118

Asia WGS AF: 0.000289 AC: 1 AN: 3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:11 Other:1

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:4

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

Jul 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

TECPR2: BP1, BP4

Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

Breakthrough Genomics, Breakthrough Genomics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: not provided

Hereditary spastic paraplegia 49 Benign:2 Other:1

GenomeConnect - Brain Gene Registry

Significance: not provided

Review Status: no classification provided

Collection Method: phenotyping only

Variant classified as Uncertain significance and reported on 06-22-2017 by GeneDx. Assertions are reported exactly as they appear on the patient provided laboratory report. GenomeConnect does not attempt to reinterpret the variant. The IDDRC-CTSA National Brain Gene Registry (BGR) is a study funded by the U.S. National Center for Advancing Translational Sciences (NCATS) and includes 13 Intellectual and Developmental Disability Research Center (IDDRC) institutions. The study is led by Principal Investigator Dr. Philip Payne from Washington University. The BGR is a data commons of gene variants paired with subject clinical information. This database helps scientists learn more about genetic changes and their impact on the brain and behavior. Participation in the Brain Gene Registry requires participation in GenomeConnect. More information about the Brain Gene Registry can be found on the study website - https://braingeneregistry.wustl.edu/.

Feb 02, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Oct 21, 2019

Natera, Inc.

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

not specified Benign:2

May 08, 2024

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: TECPR2 c.1644T>G (p.Asn548Lys) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00097 in 194180 control chromosomes, predominantly at a frequency of 0.0018 within the Non-Finnish European subpopulation in the gnomAD database. The observed variant frequency within Non-Finnish European control individuals in the gnomAD database is approximately 2 fold of the estimated maximal expected allele frequency for a pathogenic variant in TECPR2 causing Hereditary Spastic Paraplegia, Type 49 phenotype (0.0011), strongly suggesting that the variant is a benign polymorphism found primarily in populations of Non-Finnish European origin. To our knowledge, no occurrence of c.1644T>G in individuals affected with Hereditary Spastic Paraplegia, Type 49 and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 408917). Based on the evidence outlined above, the variant was classified as likely benign.

Dec 28, 2017

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease.

Inborn genetic diseases Benign:1

Apr 08, 2022

Ambry Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity.

Hereditary spastic paraplegia Benign:1

May 01, 2019

Genome Diagnostics Laboratory, The Hospital for Sick Children

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

TECPR2-related disorder Benign:1

Dec 15, 2022

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications).

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Benign	-0.71	T
BayesDel_noAF	Benign	-0.80
CADD	Benign	8.8
DANN	Benign	0.91
DEOGEN2	Benign	0.0063	T
Eigen	Benign	-1.0
Eigen_PC	Benign	-0.96
FATHMM_MKL	Uncertain	0.81	D
LIST_S2	Benign	0.68	T
M_CAP	Benign	0.0056	T
MetaRNN	Benign	0.0085	T
MetaSVM	Benign	-0.93	T
MutationAssessor	Benign	0.0	N
PhyloP100		0.030
PrimateAI	Benign	0.26	T
PROVEAN	Benign	-0.97	N
REVEL	Benign	0.038
Sift	Benign	0.16	T
Sift4G	Benign	0.13	T
Polyphen		0.049	B
Vest4		0.064
MutPred		0.36		Gain of catalytic residue at V552 (P = 2e-04)
MVP		0.093
MPC		0.36
ClinPred		0.0053	T
GERP RS		0.34
Varity_R		0.058
gMVP		0.14
Mutation Taster		=99/1	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: rs72700613; hg19: chr14-102900798; COSMIC: COSV107463671; COSMIC: COSV107463671;