2026 data ClinicalTrials.gov official source

Conditions: R

Compiled by PlainTrial Editorial, Clinical Trial Intelligence Editorial Team · January 1, 2026

Every condition beginning with R that has a registered US clinical trial, with how many studies cover each.

1,694 conditions starting with "R"

Showing 501–550 of 1,694

Condition	Trials	Recruiting
Recurrent Malignant Peripheral Nerve Sheath Tumor	2	-
Recurrent Malignant Skin Neoplasm	1	1
Recurrent Malignant Soft Tissue Neoplasm	1	1
Recurrent Malignant Solid Neoplasm	38	13
Recurrent Malignant Thymoma	1	-
Recurrent Malignant Uterine Corpus Neoplasm	3	-
Recurrent Mantle Cell Lymphoma	28	10
Recurrent Marginal Zone Lymphoma	12	1
Recurrent Mature T- and NK-Cell Non-Hodgkin Lymphoma	2	-
Recurrent Mature T- Cell and NK-Cell Non-Hodgkin Lymphoma	2	-
Recurrent Medulloblastoma	13	3
Recurrent Melanoma	25	1
Recurrent Melanoma (Skin)	1	1
Recurrent Meningioma	7	6
Recurrent Merkel Cell Carcinoma	2	-
Recurrent Metastases	1	1
Recurrent Metastatic Malignant Neoplasm in the Leptomeninges	1	-
Recurrent Metastatic Squamous Neck Cancer With Occult Primary	2	-
Recurrent Midline Lethal Granuloma of the Paranasal Sinus and Nasal Cavity	1	-
Recurrent Mixed Phenotype Acute Leukemia	8	4
Recurrent Moderate-Severe Chronic Graft Versus Host Disease	1	-
Recurrent Monomorphic Epitheliotropic Intestinal T-cell Lymphoma	1	-
Recurrent Monomorphic Post-Transplant Lymphoproliferative Disorder	2	1
Recurrent Mucoepidermoid Carcinoma of the Oral Cavity	2	1
Recurrent Mucosal Melanoma	1	-
Recurrent Multiple Myeloma	16	10
Recurrent Mycosis Fungoides	7	3
Recurrent Mycosis Fungoides/Sezary Syndrome	1	-
Recurrent Myelodysplastic Syndrome	20	12
Recurrent Myelodysplastic Syndrome/Acute Myeloid Leukemia	2	2
Recurrent Myelodysplastic/Myeloproliferative Neoplasm	3	3
Recurrent Myeloproliferative Neoplasm	3	2
Recurrent Nasal Cavity Squamous Cell Carcinoma	1	1
Recurrent Nasopharyngeal Cancer	1	-
Recurrent Nasopharyngeal Carcinoma	2	2
Recurrent Nasopharyngeal Keratinizing Squamous Cell Carcinoma	1	-
Recurrent Nasopharyngeal Undifferentiated Carcinoma	1	-
Recurrent Nasopharynx Carcinoma	1	-
Recurrent Neck Squamous Cell Carcinoma of Unknown Primary	2	1
Recurrent Neoplastic Post-Transplant Lymphoproliferative Disorder	1	1
Recurrent Nervous System Lymphoma	1	-
Recurrent Neuroblastoma	10	1
Recurrent Neuroendocrine Carcinoma of the Skin	1	-
Recurrent Neurofibromatosis Type 1	1	-
Recurrent Nodal Marginal Zone Lymphoma	2	2
Recurrent Nodular Lymphocyte Predominant B-Cell Lymphoma	1	1
Recurrent Non-Cutaneous Melanoma	1	-
Recurrent Non-Hodgkin Lymphoma	13	3
Recurrent Non-Muscle Invasive Bladder Carcinoma	3	3
Recurrent Non-Muscle Invasive Bladder Urothelial Carcinoma	1	1

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Data sourced from official public datasets. See our methodology for details.

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