rs199422308

Variant names:

• chr5-1253545-AGGCCTCAGCCGGACACTCAGCCTTCAGCCGGACATGCAGGCCTCGGCCAAACACTCACTCAGGCCTCAGACTCCCAGCGGTGCGGGCCTGGGTGTGGGCCGCCCCTCCCTCCCTGGGACGTAGAGCCCGGCGTGACAGGGCTGCTGGTGTCTGCTCTCGGCCTGGCTGTGGGCGGGT-A
• rs199422308
• NM_198253.3:c.*6_*182del

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 1P and 0B. PP5

The NM_198253.3(TERT):​c.*6_*182del variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. It is difficult to determine the true allele frequency of this variant because it is of type DEL_BIG, and the frequency of such variant types in population databases may be underestimated and unreliable. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 33)
• Consequence: TERT NM_198253.3 3_prime_UTR
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 0.648
• Publications: 2 publications found

Genes affected

TERT (HGNC:11730): (telomerase reverse transcriptase) Telomerase is a ribonucleoprotein polymerase that maintains telomere ends by addition of the telomere repeat TTAGGG. The enzyme consists of a protein component with reverse transcriptase activity, encoded by this gene, and an RNA component which serves as a template for the telomere repeat. Telomerase expression plays a role in cellular senescence, as it is normally repressed in postnatal somatic cells resulting in progressive shortening of telomeres. Deregulation of telomerase expression in somatic cells may be involved in oncogenesis. Studies in mouse suggest that telomerase also participates in chromosomal repair, since de novo synthesis of telomere repeats may occur at double-stranded breaks. Alternatively spliced variants encoding different isoforms of telomerase reverse transcriptase have been identified; the full-length sequence of some variants has not been determined. Alternative splicing at this locus is thought to be one mechanism of regulation of telomerase activity. [provided by RefSeq, Jul 2008]

TERT Gene-Disease associations (from GenCC):

• pulmonary fibrosis and/or bone marrow failure, Telomere-related, 1

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
• dyskeratosis congenita, autosomal dominant 2

  Inheritance: AR, AD, SD, Unknown Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, G2P, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), ClinGen, Laboratory for Molecular Medicine
• acute myeloid leukemia

  Inheritance: AD Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp
• dyskeratosis congenita

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

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• melanoma, cutaneous malignant, susceptibility to, 9

  Inheritance: AD Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics

ENSG00000287486 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PP5: Variant 5-1253545-AGGCCTCAGCCGGACACTCAGCCTTCAGCCGGACATGCAGGCCTCGGCCAAACACTCACTCAGGCCTCAGACTCCCAGCGGTGCGGGCCTGGGTGTGGGCCGCCCCTCCCTCCCTGGGACGTAGAGCCCGGCGTGACAGGGCTGCTGGTGTCTGCTCTCGGCCTGGCTGTGGGCGGGT-A is Pathogenic according to our data. Variant chr5-1253545-AGGCCTCAGCCGGACACTCAGCCTTCAGCCGGACATGCAGGCCTCGGCCAAACACTCACTCAGGCCTCAGACTCCCAGCGGTGCGGGCCTGGGTGTGGGCCGCCCCTCCCTCCCTGGGACGTAGAGCCCGGCGTGACAGGGCTGCTGGTGTCTGCTCTCGGCCTGGCTGTGGGCGGGT-A is described in ClinVar as Pathogenic. ClinVar VariationId is 39123.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_198253.3. 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
	TERT	NM_198253.3	MANE Select	c.*6_*182del		3_prime_UTR	Exon 16 of 16	NP_937983.2
	TERT	NM_001193376.3		c.*6_*182del		3_prime_UTR	Exon 15 of 15	NP_001180305.1
	TERT	NR_149162.3		n.3113_3289del		non_coding_transcript_exon	Exon 13 of 13

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TERT	ENST00000310581.10	TSL:1 MANE Select	c.*6_*182del		3_prime_UTR	Exon 16 of 16	ENSP00000309572.5
	TERT	ENST00000922986.1		c.*6_*182del		3_prime_UTR	Exon 17 of 17	ENSP00000593045.1
	TERT	ENST00000922985.1		c.*6_*182del		3_prime_UTR	Exon 16 of 16	ENSP00000593044.1

Frequencies

GnomAD3 genomes Cov.: 33

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions as Germline

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Interstitial lung disease 2 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.65
Mutation Taster		=33/67	disease causing (ClinVar)

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs199422308; hg19: chr5-1253660;