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Updated: Feb 20, 2026

Establishment and Characterization of Patient-Derived Xenograft Models of Anaplastic Thyroid Carcinoma and Head and Neck Squamous Cell Carcinoma
Published on: June 2, 2023
Anaplastic Thyroid Carcinoma Treated with Lenvatinib.
Jun-Ichi Ohkubo1, Azusa Takahashi1, Shoji Ikezaki1
1Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, University of Occupational and Environmental Health.
Anaplastic thyroid carcinoma (ATC) with recurrence and metastasis showed a significant response to lenvatinib. However, severe side effects led to treatment discontinuation and rapid tumor regrowth.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Anaplastic thyroid carcinoma (ATC) is an aggressive thyroid cancer with poor prognosis.
- Recurrence and distant metastasis significantly worsen patient outcomes.
- Molecular-targeted therapies offer new treatment avenues for advanced cancers.
Observation:
- A 91-year-old woman with recurrent ATC and lung metastases received lenvatinib.
- The patient experienced rapid tumor reduction in the neck and lungs.
- Severe side effects including hypertension and metabolic disturbances necessitated lenvatinib discontinuation.
Findings:
- Lenvatinib demonstrated significant efficacy in reducing tumor burden in recurrent ATC with metastasis.
- Treatment discontinuation due to adverse events led to rapid tumor progression.
- The case highlights the complex balance between efficacy and toxicity of targeted therapies.
Implications:
- Lenvatinib may be a viable treatment option for recurrent or metastatic ATC.
- Careful monitoring and management of side effects are crucial for lenvatinib therapy.
- Further research is needed to optimize the use of targeted agents in advanced thyroid cancer.
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