1-115033474-T-C

Position:

• chr1-115033474-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_000549.5(TSHB):​c.112T>C​(p.Tyr38His) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: TSHB NM_000549.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.17

Genes affected

TSHB (HGNC:12372): (thyroid stimulating hormone subunit beta) The four human glycoprotein hormones chorionic gonadotropin (CG), luteinizing hormone (LH), follicle stimulating hormone (FSH), and thyroid stimulating hormone (TSH) are dimers consisting of alpha and beta subunits that are associated noncovalently. The alpha subunits of these hormones are identical, however, their beta chains are unique and confer biological specificity. Thyroid stimulating hormone functions in the control of thyroid structure and metabolism. The protein encoded by this gene is the beta subunit of thyroid stimulating hormone. Mutations in this gene are associated with congenital central and secondary hypothyroidism and Hashimoto's thyroiditis. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, May 2013]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.777

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TSHB	NM_000549.5	c.112T>C	p.Tyr38His	missense_variant	2/3	ENST00000256592.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TSHB	ENST00000256592.3	c.112T>C	p.Tyr38His	missense_variant	2/3	5	NM_000549.5	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 17, 2024

The c.112T>C (p.Y38H) alteration is located in exon 2 (coding exon 1) of the TSHB gene. This alteration results from a T to C substitution at nucleotide position 112, causing the tyrosine (Y) at amino acid position 38 to be replaced by a histidine (H). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Pathogenic	0.16	D
BayesDel_noAF	Uncertain	0.0
CADD	Benign	23
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.70	D;D
Eigen	Uncertain	0.52
Eigen_PC	Uncertain	0.56
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.89	D;.
M_CAP	Benign	0.034	D
MetaRNN	Pathogenic	0.78	D;D
MetaSVM	Uncertain	0.15	D
MutationAssessor	Uncertain	2.1	M;M
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.61	T
PROVEAN	Benign	-1.9	N;N
REVEL	Uncertain	0.49
Sift	Benign	0.044	D;D
Sift4G	Benign	0.17	T;T
Polyphen		0.70	P;P
Vest4		0.62
MutPred		0.31		Loss of stability (P = 0.0878);Loss of stability (P = 0.0878);
MVP		0.72
MPC		0.45
ClinPred		0.87	D
GERP RS		6.2
Varity_R		0.33
gMVP		0.79

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr1-115576095;