8-132867006-C-T

Variant names:

• chr8-132867006-C-T
• rs1420201079
• NM_003235.5:c.6C>T

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Moderate BP6_Moderate BP7

The NM_003235.5(TG):​c.6C>T​(p.Ala2Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000693 in 1,443,142 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: TG NM_003235.5 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.509
• Publications: 6 publications found

Genes affected

TG (HGNC:11764): (thyroglobulin) Thyroglobulin (Tg) is a glycoprotein homodimer produced predominantly by the thryroid gland. It acts as a substrate for the synthesis of thyroxine and triiodothyronine as well as the storage of the inactive forms of thyroid hormone and iodine. Thyroglobulin is secreted from the endoplasmic reticulum to its site of iodination, and subsequent thyroxine biosynthesis, in the follicular lumen. Mutations in this gene cause thyroid dyshormonogenesis, manifested as goiter, and are associated with moderate to severe congenital hypothyroidism. Polymorphisms in this gene are associated with susceptibility to autoimmune thyroid diseases (AITD) such as Graves disease and Hashimoto thryoiditis. [provided by RefSeq, Nov 2009]

TG Gene-Disease associations (from GenCC):

• thyroid dyshormonogenesis 3

  Inheritance: AR Classification: STRONG Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae)
• familial thyroid dyshormonogenesis

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• thyroid cancer

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.33).
• BP6: Variant 8-132867006-C-T is Benign according to our data. Variant chr8-132867006-C-T is described in ClinVar as Likely_benign. ClinVar VariationId is 2781284.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=0.509 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003235.5. 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
	TG	NM_003235.5	MANE Select	c.6C>T	p.Ala2Ala	synonymous	Exon 1 of 48	NP_003226.4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TG	ENST00000220616.9	TSL:1 MANE Select	c.6C>T	p.Ala2Ala	synonymous	Exon 1 of 48	ENSP00000220616.4	P01266-1
	TG	ENST00000523901.1	TSL:5	n.6C>T		non_coding_transcript_exon	Exon 1 of 6	ENSP00000427871.1	E5RG33

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000451 AC: 1 AN: 221656 AF XY: 0.00000839

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000103

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.93e-7 AC: 1 AN: 1443142 Hom.: 0 Cov.: 31 AF XY: 0.00000140 AC XY: 1 AN XY: 715914

African (AFR) AF: 0.00 AC: 0 AN: 33124

American (AMR) AF: 0.00 AC: 0 AN: 43068

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25754

East Asian (EAS) AF: 0.00 AC: 0 AN: 39042

South Asian (SAS) AF: 0.00 AC: 0 AN: 83344

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52080

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5740

European-Non Finnish (NFE) AF: 9.08e-7 AC: 1 AN: 1101376

Other (OTH) AF: 0.00 AC: 0 AN: 59614

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.33
CADD	Benign	8.9
DANN	Benign	0.68
PhyloP100		0.51
PromoterAI		0.055	Neutral

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: rs1420201079; hg19: chr8-133879251; COSMIC: COSV55078265;