14-24240119-A-T

Variant names:

• chr14-24240119-A-T
• rs192423622
• NM_001099274.3:c.1166T>A

Variant summary

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

The NM_001099274.3(TINF2):​c.1166T>A​(p.Ile389Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,888 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I389T) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: TINF2 NM_001099274.3 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 2.90
• Publications: 3 publications found

Genes affected

TINF2 (HGNC:11824): (TERF1 interacting nuclear factor 2) This gene encodes one of the proteins of the shelterin, or telosome, complex which protects telomeres by allowing the cell to distinguish between telomeres and regions of DNA damage. The protein encoded by this gene is a critical part of shelterin; it interacts with the three DNA-binding proteins of the shelterin complex, and it is important for assembly of the complex. Mutations in this gene cause dyskeratosis congenita (DKC), an inherited bone marrow failure syndrome. [provided by RefSeq, Mar 2010]

TINF2 Gene-Disease associations (from GenCC):

• dyskeratosis congenita, autosomal dominant 3

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, G2P, ClinGen, PanelApp Australia, Labcorp Genetics (formerly Invitae)
• Revesz syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, G2P, PanelApp Australia
• pulmonary fibrosis

  Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
• dyskeratosis congenita

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Hoyeraal-Hreidarsson syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• thyroid gland papillary carcinoma

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001099274.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TINF2	NM_001099274.3	MANE Select	c.1166T>A	p.Ile389Lys	missense	Exon 8 of 9	NP_001092744.1	Q9BSI4-1
	TINF2	NM_001363668.2		c.1061T>A	p.Ile354Lys	missense	Exon 7 of 8	NP_001350597.1	B4DFJ1
	TINF2	NM_012461.3		c.*296T>A		3_prime_UTR	Exon 6 of 6	NP_036593.2	Q9BSI4-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TINF2	ENST00000267415.12	TSL:1 MANE Select	c.1166T>A	p.Ile389Lys	missense	Exon 8 of 9	ENSP00000267415.7	Q9BSI4-1
	TINF2	ENST00000399423.8	TSL:1	c.*296T>A		3_prime_UTR	Exon 6 of 6	ENSP00000382350.4	Q9BSI4-2
	TINF2	ENST00000943625.1		c.1112T>A	p.Ile371Lys	missense	Exon 8 of 9	ENSP00000613684.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461888 Hom.: 0 Cov.: 32 AF XY: 0.00000275 AC XY: 2 AN XY: 727242

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

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

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

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

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1112010

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Dyskeratosis congenita (1)
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.57
BayesDel_addAF	Pathogenic	0.27	D
BayesDel_noAF	Pathogenic	0.15
CADD	Uncertain	25
DANN	Benign	0.96
DEOGEN2	Benign	0.21	T
Eigen	Uncertain	0.53
Eigen_PC	Uncertain	0.53
FATHMM_MKL	Uncertain	0.89	D
M_CAP	Pathogenic	0.30	D
MetaRNN	Uncertain	0.65	D
MetaSVM	Uncertain	0.46	D
MutationAssessor	Benign	1.9	L
PhyloP100		2.9
PrimateAI	Uncertain	0.57	T
PROVEAN	Pathogenic	-6.4	D
REVEL	Pathogenic	0.75
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		0.96	P
Vest4		0.59
MutPred		0.50		Gain of catalytic residue at L392 (P = 3e-04)
MVP		0.87
MPC		0.60
ClinPred		0.99	D
GERP RS		5.4
PromoterAI		0.015	Neutral
Varity_R		0.53
gMVP		0.57
Mutation Taster		=60/40	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: rs192423622; hg19: chr14-24709325;