chr6-150369091-T-C

Variant names:

• chr6-150369091-T-C
• rs1582758867
• NM_203395.3:c.60T>C

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 2P and 7B. PM2 BP4_Strong BP6_Moderate BP7

The NM_203395.3(IYD):​c.60T>C​(p.Phe20Phe) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000659 in 151,730 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: 𝑓 0.0000066 (0 hom., cov: 31)
• Consequence: IYD NM_203395.3 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 1.70
• Publications: 0 publications found

Genes affected

IYD (HGNC:21071): (iodotyrosine deiodinase) This gene encodes an enzyme that catalyzes the oxidative NADPH-dependent deiodination of mono- and diiodotyrosine, which are the halogenated byproducts of thyroid hormone production. The N-terminus of the protein functions as a membrane anchor. Mutations in this gene cause congenital hypothyroidism due to dyshormonogenesis type 4, which is also referred to as deiodinase deficiency, or iodotyrosine dehalogenase deficiency, or thyroid hormonogenesis type 4. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2009]

IYD Gene-Disease associations (from GenCC):

• thyroid dyshormonogenesis 4

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

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.56).
• BP6: Variant 6-150369091-T-C is Benign according to our data. Variant chr6-150369091-T-C is described in ClinVar as Likely_benign. ClinVar VariationId is 751079.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=1.7 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_203395.3. 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
	IYD	NM_203395.3	MANE Select	c.60T>C	p.Phe20Phe	synonymous	Exon 1 of 5	NP_981932.1	Q6PHW0-1
	IYD	NM_001164694.2		c.60T>C	p.Phe20Phe	synonymous	Exon 1 of 6	NP_001158166.1	Q6PHW0-4
	IYD	NM_001164695.2		c.60T>C	p.Phe20Phe	synonymous	Exon 1 of 6	NP_001158167.1	Q6PHW0-3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	IYD	ENST00000344419.8	TSL:1 MANE Select	c.60T>C	p.Phe20Phe	synonymous	Exon 1 of 5	ENSP00000343763.4	Q6PHW0-1
	IYD	ENST00000229447.9	TSL:1	c.60T>C	p.Phe20Phe	synonymous	Exon 1 of 6	ENSP00000229447.5	Q6PHW0-4
	IYD	ENST00000392255.7	TSL:1	c.60T>C	p.Phe20Phe	synonymous	Exon 1 of 6	ENSP00000376084.3	C9JXJ9

Frequencies

GnomAD3 genomes AF: 0.00000659 AC: 1 AN: 151730 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

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: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 31

GnomAD4 genome AF: 0.00000659 AC: 1 AN: 151730 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 74074

African (AFR) AF: 0.00 AC: 0 AN: 41306

American (AMR) AF: 0.00 AC: 0 AN: 15234

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3462

East Asian (EAS) AF: 0.00 AC: 0 AN: 5144

South Asian (SAS) AF: 0.00 AC: 0 AN: 4788

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10558

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 67924

Other (OTH) AF: 0.00 AC: 0 AN: 2086

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

ClinVar submissions as Germline

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	-0.56
CADD	Benign	11
DANN	Benign	0.78
PhyloP100		1.7
PromoterAI		-0.028	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: rs1582758867; hg19: chr6-150690227;