Clinical trial · Interventional
Studies of Elevated Parathyroid Activity
Studies of Hyperparathyroidism and Related Disorders
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
Observational Phase: Patients whose parathyroid activity is elevated above normal are referred to as having hyperparathyroidism. This study will help researchers better understand the causes of hyperparathyroidism and to evaluate and improve methods for diagnosis and treatment. Patients diagnosed with or suspected of having hyperparathyroidism will be selected to participate. In addition, patients with related conditions, such as parathyroid tumors, will also be selected. Subjects will be asked to provide blood and urine for testing to confirm their condition. They will then be surgically treated by removal of the parathyroid gland(s) (parathyroidectomy). Subjects with parathyroid tumors will undergo several diagnostic tests to determine the exact location of the tumor as well as the tumor's activity. The tests may include; ultrasounds, nuclear scanning, CT scans, MRI, and specialized blood testing. Sometimes parathyroidectomy leads to hypoparathyroidism. Options for treating the patients after the surgical procedure will also be addressed. Calcium and Vitamin D supplements are typically the mainstay of post parathyroidectomy therapy. Other potential treatments include transplanting the parathyroid gland(s) to other areas of the body. Clinical Trial: An imaging substudy was added to this protocol in 2018. Patients with multiple endocrine neoplasia type 1 (MEN1) will have 68Gallium-Dotatate Positron Emission Tomography (PET) - Computed Tomography (CT), 18F-DOPA PET/CT, MRI, and CT scans and the number of lesions detected by each of these types of scans will be compared.
Conditions
Conditions (5)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Hypercalcemia | — | UNRESOLVED | — |
| Hyperparathyroidism | — | UNRESOLVED | — |
| MEN1 | — | UNRESOLVED | — |
| Multiple Endocrine Neoplasia | Multiple Endocrine Neoplasia | ONTOLOGY_EXACT | 0.98 |
| Parathyroid Neoplasm | Parathyroid Gland Neoplasm | ALIAS | 0.90 |
Interventions
Interventions (2)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| 18F-DOPA | Drug | — | UNRESOLVED |
| 68Ga-Dotatate | Drug | — | UNRESOLVED |
Design
Arms and outcomes
Arms (2)
- type
- NO_INTERVENTION
- label
- Primary hyperparathyroidism
- description
- Patients with confirmed or suspected primary hyperparathyroidism or complications
- type
- EXPERIMENTAL
- label
- DOTATATE and F-DOPA
- description
- Patients scanned using imaging agents 68GALLIUM-DOTATATE and 18F-DOPA
- interventionNames
- Drug: 68Ga-Dotatate
- Drug: 18F-DOPA
Primary outcomes (3)
- measure
- Type of Hyperparathyroidism
- timeFrame
- First year
- description
- The purpose of this study is to understand the causes of primary hyperparathyroidism, to evaluate and improve methods for diagnosis and treatment, and to provide insight into the mechanisms of normal parathyroid function. Hereditary causes of primary hyperparathyroidism will be characterized. Patients were categorized as follows: 1. MEN1: Diagnosed by demonstration of a germline variant in MEN1 gene or one of the following: a) two of three primary MEN1 manifestations b) one primary MEN1 manifestation with a family member with MEN1. 2. Other familial: Non-MEN1 patients who had a positive family history of hyperparathyroidism suspicious for underlying germline predisposition syndrome. 3. Sporadic: Patients who did not have a positive family history of hyperparathyroidism. 4. Unknown: No data to help categorize the patients in any of the above categories.
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 2 Months
Show eligibility criteria text
INCLUSION CRITERIA: * Patients who have genetically confirmed MEN1 or clinical criteria of MEN1. * For females: Negative urine pregnancy test OR post-menopausal for at least 2 years OR patient has had a hysterectomy EXCLUSION CRITERIA: * Serious underlying medical conditions that restrict diagnostic testing or therapy such as renal failure or congestive cardiac failure * Patients unable or unwilling to give informed consent * Pregnant or lactating women: Pregnant women are excluded from this study because the effects of 68Ga-DOTATATE in pregnancy are not known. Because there is an unknown but potential risk for adverse events in nursing infants secondary to administration of 68Ga-DOTATATE in the mother, women who are breastfeeding are also excluded from this study * Patients that have recognized concurrent active infection * Patients with known hypersensitivity to carbidopa, or who are concurrently taking a nonselective monoamine oxidase (MAO) inhibitor..
References
Publications (0)
Data not yet available