chr6-150389380-A-C

Variant names:

• chr6-150389380-A-C
• rs753538030
• NM_203395.3:c.207A>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_203395.3(IYD):​c.207A>C​(p.Glu69Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,584 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: IYD NM_203395.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.938
• Publications: 1 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: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.17672837).

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.207A>C	p.Glu69Asp	missense	Exon 2 of 5	NP_981932.1	Q6PHW0-1
	IYD	NM_001164694.2		c.207A>C	p.Glu69Asp	missense	Exon 2 of 6	NP_001158166.1	Q6PHW0-4
	IYD	NM_001164695.2		c.207A>C	p.Glu69Asp	missense	Exon 2 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.207A>C	p.Glu69Asp	missense	Exon 2 of 5	ENSP00000343763.4	Q6PHW0-1
	IYD	ENST00000229447.9	TSL:1	c.207A>C	p.Glu69Asp	missense	Exon 2 of 6	ENSP00000229447.5	Q6PHW0-4
	IYD	ENST00000392255.7	TSL:1	c.207A>C	p.Glu69Asp	missense	Exon 2 of 6	ENSP00000376084.3	C9JXJ9

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251304 AF XY: 0.00

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: 0.00000880

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461584 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 727124

African (AFR) AF: 0.00 AC: 0 AN: 33474

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26130

East Asian (EAS) AF: 0.00 AC: 0 AN: 39680

South Asian (SAS) AF: 0.00 AC: 0 AN: 86248

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53404

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111772

Other (OTH) AF: 0.00 AC: 0 AN: 60388

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000824 AC: 1

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

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

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.082
BayesDel_addAF	Benign	-0.090	T
BayesDel_noAF	Benign	-0.37
CADD	Benign	11
DANN	Uncertain	1.0
DEOGEN2	Benign	0.055	T
Eigen	Benign	-0.54
Eigen_PC	Benign	-0.71
FATHMM_MKL	Benign	0.31	N
LIST_S2	Benign	0.69	T
M_CAP	Benign	0.057	D
MetaRNN	Benign	0.18	T
MetaSVM	Uncertain	-0.081	T
MutationAssessor	Uncertain	2.4	M
PhyloP100		0.94
PrimateAI	Benign	0.33	T
PROVEAN	Benign	-1.7	N
REVEL	Uncertain	0.32
Sift	Benign	0.072	T
Sift4G	Benign	0.087	T
Polyphen		0.69	P
Vest4		0.39
MutPred		0.18		Gain of helix (P = 0.132)
MVP		0.90
MPC		0.076
ClinPred		0.30	T
GERP RS		-1.0
Varity_R		0.079
gMVP		0.21
Mutation Taster		=88/12	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: rs753538030; hg19: chr6-150710516;