chr14-80202870-C-G
Variant names:
Variant summary
Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4
The NM_013989.5(DIO2):āc.641G>Cā(p.Arg214Pro) variant causes a missense change. The variant allele was found at a frequency of 0.00000657 in 152,102 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.
Frequency
Genomes: š 0.0000066 ( 0 hom., cov: 32)
Consequence
DIO2
NM_013989.5 missense
NM_013989.5 missense
Scores
4
13
Clinical Significance
Not reported in ClinVar
Conservation
PhyloP100: 6.03
Genes affected
DIO2 (HGNC:2884): (iodothyronine deiodinase 2) The protein encoded by this gene belongs to the iodothyronine deiodinase family. It catalyzes the conversion of prohormone thyroxine (3,5,3',5'-tetraiodothyronine, T4) to the bioactive thyroid hormone (3,5,3'-triiodothyronine, T3) by outer ring 5'-deiodination. This gene is widely expressed, including in thyroid and brain. It is thought to be responsible for the 'local' production of T3, and thus important in influencing thyroid hormone action in these tissues. It has also been reported to be highly expressed in thyroids of patients with Graves disease, and in follicular adenomas. The intrathyroidal T4 to T3 conversion by this enzyme may contribute significantly to the relative increase in thyroidal T3 production in these patients. This protein is a selenoprotein containing the non-standard amino acid, selenocysteine (Sec), which is encoded by the UGA codon that normally signals translation termination. The 3' UTRs of selenoprotein mRNAs contain a conserved stem-loop structure, designated the Sec insertion sequence (SECIS) element, that is necessary for the recognition of UGA as a Sec codon, rather than as a stop signal. Unlike the other two members (DIO1 and DIO3) of this enzyme family, the mRNA for this gene contains an additional in-frame UGA codon that has been reported (in human) to function either as a Sec or a stop codon, which can result in two isoforms with one or two Sec residues; however, only the upstream Sec (conserved with the single Sec residue found at the active site in DIO1 and DIO3) was shown to be essential for enzyme activity (PMID:10403186). Alternatively spliced transcript variants have been described for this gene. [provided by RefSeq, Oct 2018]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 1 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.3954916).
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152102Hom.: 0 Cov.: 32
GnomAD3 genomes
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GnomAD4 exome Cov.: 30
GnomAD4 exome
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30
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152102Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74306
GnomAD4 genome
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74306
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ClinVar
Not reported inComputational scores
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Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
CADD
Uncertain
DANN
Uncertain
DEOGEN2
Benign
T;T;.
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Uncertain
D
LIST_S2
Benign
.;D;.
MetaRNN
Benign
T;T;T
MetaSVM
Benign
T
MutationAssessor
Benign
N;N;.
PrimateAI
Benign
T
PROVEAN
Benign
N;N;N
REVEL
Benign
Sift
Benign
T;T;T
Sift4G
Benign
T;T;T
Polyphen
P;P;.
MutPred
Gain of catalytic residue at V211 (P = 8e-04);Gain of catalytic residue at V211 (P = 8e-04);.;
MVP
MPC
0.66
ClinPred
D
GERP RS
Varity_R
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at