Thyroid Test

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Comprehensive Thyroid Genetic Testing for Precision Endocrinology

Introduction
Thyroid disorders represent a significant clinical and public health concern, affecting metabolic regulation, neurological development, cardiovascular health, and oncologic outcomes. While many thyroid conditions are acquired, a substantial subset arises from germline genetic alterations that disrupt hormone biosynthesis, cellular signaling, and proliferative control.

Early identification of these variants enables greater diagnostic precision, therapeutic stratification, and long-term patient management.

Genuvi has developed a robust Comprehensive Thyroid Genetic Panel of 59 genes, designed to elucidate the molecular basis of both hereditary and sporadic thyroid diseases. This panel is clinically validated to detect single nucleotide variants (SNVs) and small indels in critical coding and flanking intronic regions, providing actionable insights across a wide spectrum of endocrine and oncologic presentations.

Genetic testing plays a transformative role in the management of thyroid disease.
Hereditary pathogenic variants may cause congenital hypothyroidism, thyroid hormone resistance, thyroid dysgenesis, autoimmune predispositions, and neoplasms, including medullary and papillary thyroid carcinomas.
Molecular diagnosis enables personalized treatment, risk-reduction interventions, and cascade family testing.

Clinical indications for testing include:

Neonatal or early-onset hypothyroidism or hyperthyroidism

Unexplained thyroid hormone resistance syndromes

Indeterminate or suspicious thyroid nodules on cytology (Bethesda III/IV)

Personal or family history of differentiated or medullary thyroid carcinoma

Suspected multiple endocrine neoplasia (MEN) or autoimmune polyglandular syndromes

This panel evaluates 59 genes selected based on evidence-based clinical utility, inclusion in professional guidelines, and relevance to thyroid hormone biosynthesis, organogenesis, oncogenesis, and immune regulation.
It includes high-penetrance tumor suppressors, transcriptional regulators, membrane transporters, and hormone receptor components.

Covered Genes: 59 clinically validated genes

Analytical Sensitivity: >99% of target regions at sequencing depth >20x

Turnaround Time: 10–14 calendar days

Methodology: Targeted hybrid capture and high-throughput Illumina sequencing

Variant Interpretation: Curated according to ACMG/AMP guidelines using Fabric Enterprise™ Pipeline 6.6.15; multidisciplinary review by clinical geneticists and molecular pathologists

Reporting: Includes pathogenic and likely pathogenic variants with clinical annotations and management recommendations

Individuals with congenital hypothyroidism or abnormal newborn screening results

Patients with refractory thyroid disorders or abnormal hormonal profiles

Subjects with a family history of thyroid cancer or MEN2-related syndromes

Individuals undergoing evaluation for nodular thyroid disease with indeterminate FNA results

Relatives of individuals with known pathogenic thyroid-associated variants

Improves diagnostic accuracy and clarifies ambiguous thyroid function profiles

Facilitates personalized hormone replacement strategies

Guides surgical decision-making in thyroid nodule and cancer management

Enables risk-based surveillance and prophylactic measures for affected families

Supports multidisciplinary care in complex endocrine-genetic syndromes

The integration of genetic testing into thyroid disease management has ushered in a new era of precision endocrinology. By enabling a deeper understanding of the genetic contributions to thyroid function and pathology, Genuvi’s Comprehensive Thyroid Genetic Panel serves as a crucial tool for personalized risk assessment, targeted intervention, and improved clinical outcomes. Clinicians are empowered to deliver informed care that anticipates disease progression, minimizes uncertainty, and supports proactive family-based medicine.

The Thyroid Panel is designed to detect SNVs and small insertions/deletions in 59 genes relevant to thyroid pathology. The assay targets coding exons and adjacent intronic sequences within ±10 base pairs. Genomic DNA is enriched using hybrid capture methods and sequenced with Illumina’s sequencing-by-synthesis (SBS) technology. Bioinformatic analysis is performed using Fabric Enterprise™ Pipeline 6.6.15, aligned to the human genome build GRCh37. Variant classification follows ACMG/AMP criteria. Review and reporting are conducted by Fabric Clinical (CLIA ID: 45D2281059; CAP ID: 9619501). Filters applied include: quality <500, allelic balance <0.3, coverage <10x.

APC, CHEK2, DICER1, DUOX2, DUOXA2, FOXE1, GLIS3, GNAS,HESX1, IGSF1, IRS4, IYD, KDM6A, KMT2D, NKX2-1, NKX2-5, OTX2, PAX8, POU1F1,PRKAR1A, PROP1, PTEN, RET, SLC16A2, SLC26A4, SLC26A7, SLC5A5, TBL1X, TG, THRA,THRB, TP53, TPO, TRHR, TSHB, TSHR, UBR1, WRN, ATP1A2, CACNA1A, CST3, CSTB,CTNNB1, G6PD, GLIS3, HAMP, HFE, HRAS, KRAS, MECP2, NRAS, PIK3CA, PLCG2, PLN, SECISBP2, SLC40A1, TfR2, TGFBI, TTR

Test Limitations:

This assay is limited to the detection of SNVs and small indels in the targeted exonic and flanking intronic regions. It does not reliably detect large genomic deletions or duplications, structural variants, repeat expansions, mitochondrial mutations, or low-level mosaicism. Variants outside the targeted regions, including promoter/enhancer elements, may not be detected. Interpretation is based on current scientific knowledge and may evolve with new evidence.

Regulatory Disclosures:

This laboratory-developed test (LDT) was validated by Genuvi and is performed in their CLIA-certified and CAP-accredited laboratory (CLIA ID: 10D2210020; CAP ID: 9101993). This assay has not been reviewed by the FDA, as approval is not required for LDTs used in CLIA-certified clinical diagnostic laboratories.

For additional details, including full gene lists, ordering information, and interpretation support, please contact our molecular diagnostics team at [email protected]
or visit www.us.genuvilab.com