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Thyrogen + Radioiodine (131I)

Genzyme, a Sanofi Company · Phase 3 active Small molecule

Thyrogen + Radioiodine (131I) is a Recombinant hormone + radiopharmaceutical combination Small molecule drug developed by Genzyme, a Sanofi Company. It is currently in Phase 3 development for Thyroid cancer (differentiated thyroid cancer with radioiodine-avid metastases), Thyroid remnant ablation in thyroid cancer patients.

Thyrogen (recombinant human TSH) stimulates thyroid tissue to take up radioiodine (131I), enabling targeted destruction of thyroid cancer cells and metastases.

Thyrogen (recombinant human TSH) stimulates thyroid tissue to take up radioiodine (131I), enabling targeted destruction of thyroid cancer cells and metastases. Used for Thyroid cancer (differentiated thyroid cancer with radioiodine-avid metastases), Thyroid remnant ablation in thyroid cancer patients.

At a glance

Generic nameThyrogen + Radioiodine (131I)
SponsorGenzyme, a Sanofi Company
Drug classRecombinant hormone + radiopharmaceutical combination
TargetTSH receptor (TSHR)
ModalitySmall molecule
Therapeutic areaOncology
PhasePhase 3

Mechanism of action

Thyrogen is a recombinant form of thyroid-stimulating hormone (TSH) that binds to TSH receptors on thyroid follicular cells, stimulating them to produce thyroglobulin and increase iodine uptake. When combined with radioactive iodine-131, this enhanced uptake allows the radioactive isotope to concentrate in thyroid tissue and metastases, delivering targeted radiation to destroy thyroid cancer cells while minimizing systemic exposure.

Approved indications

Common side effects

Key clinical trials

Primary sources

Every claim on this page is sourced from regulatory or scientific primary sources. See our editorial policy for full methodology.

SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results

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Frequently asked questions about Thyrogen + Radioiodine (131I)

What is Thyrogen + Radioiodine (131I)?

Thyrogen + Radioiodine (131I) is a Recombinant hormone + radiopharmaceutical combination drug developed by Genzyme, a Sanofi Company, indicated for Thyroid cancer (differentiated thyroid cancer with radioiodine-avid metastases), Thyroid remnant ablation in thyroid cancer patients.

How does Thyrogen + Radioiodine (131I) work?

Thyrogen (recombinant human TSH) stimulates thyroid tissue to take up radioiodine (131I), enabling targeted destruction of thyroid cancer cells and metastases.

What is Thyrogen + Radioiodine (131I) used for?

Thyrogen + Radioiodine (131I) is indicated for Thyroid cancer (differentiated thyroid cancer with radioiodine-avid metastases), Thyroid remnant ablation in thyroid cancer patients.

Who makes Thyrogen + Radioiodine (131I)?

Thyrogen + Radioiodine (131I) is developed by Genzyme, a Sanofi Company (see full Genzyme, a Sanofi Company pipeline at /company/genzyme-a-sanofi-company).

What drug class is Thyrogen + Radioiodine (131I) in?

Thyrogen + Radioiodine (131I) belongs to the Recombinant hormone + radiopharmaceutical combination class. See all Recombinant hormone + radiopharmaceutical combination drugs at /class/recombinant-hormone-radiopharmaceutical-combination.

What development phase is Thyrogen + Radioiodine (131I) in?

Thyrogen + Radioiodine (131I) is in Phase 3.

What are the side effects of Thyrogen + Radioiodine (131I)?

Common side effects of Thyrogen + Radioiodine (131I) include Hypothyroidism, Headache, Nausea, Fatigue, Radiation-related effects (salivary gland dysfunction, bone marrow suppression).

What does Thyrogen + Radioiodine (131I) target?

Thyrogen + Radioiodine (131I) targets TSH receptor (TSHR) and is a Recombinant hormone + radiopharmaceutical combination.

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