chr16-75648339-C-G

Position:

• chr16-75648339-C-G

Variant summary

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

The ENST00000300086.5(TERF2IP):​c.457C>G​(p.Arg153Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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. R153C) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: TERF2IP ENST00000300086.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.00

Genes affected

TERF2IP (HGNC:19246): (TERF2 interacting protein) Enables G-rich strand telomeric DNA binding activity and phosphatase binding activity. Involved in several processes, including positive regulation of NIK/NF-kappaB signaling; regulation of nucleobase-containing compound metabolic process; and regulation of protein modification process. Located in chromosome, telomeric region; cytosol; and nuclear body. Part of shelterin complex. [provided by Alliance of Genome Resources, Apr 2022]

KARS1 (HGNC:6215): (lysyl-tRNA synthetase 1) Aminoacyl-tRNA synthetases are a class of enzymes that charge tRNAs with their cognate amino acids. Lysyl-tRNA synthetase is a homodimer localized to the cytoplasm which belongs to the class II family of tRNA synthetases. It has been shown to be a target of autoantibodies in the human autoimmune diseases, polymyositis or dermatomyositis. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

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/exons	MANE	Protein	UniProt
TERF2IP	NM_018975.4	c.457C>G	p.Arg153Gly	missense_variant	1/3	ENST00000300086.5	NP_061848.2
TERF2IP	XM_047434216.1	c.457C>G	p.Arg153Gly	missense_variant	1/2		XP_047290172.1
TERF2IP	NR_144545.2	n.567C>G		non_coding_transcript_exon_variant	1/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TERF2IP	ENST00000300086.5	c.457C>G	p.Arg153Gly	missense_variant	1/3	1	NM_018975.4	ENSP00000300086	P1
KARS1	ENST00000566560.5	n.176+129G>C		intron_variant, non_coding_transcript_variant		1
TERF2IP	ENST00000653858.1	c.457C>G	p.Arg153Gly	missense_variant	1/4			ENSP00000499565

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1431542 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 709006

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000829 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.26
BayesDel_addAF	Benign	-0.089	T
BayesDel_noAF	Benign	-0.37
CADD	Benign	23
DANN	Uncertain	0.99
DEOGEN2	Benign	0.28	T
Eigen	Uncertain	0.21
Eigen_PC	Uncertain	0.25
FATHMM_MKL	Benign	0.32	N
LIST_S2	Benign	0.67	T
M_CAP	Uncertain	0.096	D
MetaRNN	Uncertain	0.69	D
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.3	L
MutationTaster	Benign	0.98	D
PrimateAI	Uncertain	0.58	T
PROVEAN	Benign	-1.3	N
REVEL	Benign	0.21
Sift	Benign	0.27	T
Sift4G	Benign	0.28	T
Polyphen		0.94	P
Vest4		0.58
MutPred		0.64		Loss of MoRF binding (P = 0.0252);
MVP		0.54
MPC		1.9
ClinPred		0.87	D
GERP RS		3.6
Varity_R		0.16
gMVP		0.25

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

LitVar

Other links and lift over

dbSNP: rs11556640; hg19: chr16-75682237;