Clinical Research Directory

Inclusion criteria: * Provision of signed and dated informed consent form * Males and females; Age: ≥18 years old * Identified ethnicity as "Hispanic" or "Latino/Latina" * Ability to read, write, and speak Spanish * Those who are pregnant are eligible to participate * Have or will face this decision, including: a. Participant/survivor - who has medullary thyroid carcinoma, as determined by a clinician or documented in Multi-Institutional Medullary Thyroid Cancer Collaborative Registry; b. Caregiver/family member - of Participant/survivor who has medullary thyroid carcinoma, as nominated by the Participant/survivor Exclusion Criteria: * Those \< age 18 * Ethnic identity as non-Hispanic or non-Latino/a individual * Individuals with cognitive or psychological impairment (e.g., depression, anxiety, severe mental illness as documented in the registry