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Clinical Research Directory

Browse clinical research sites, groups, and studies.

15 clinical studies listed.

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Refractory

Tundra lists 15 Refractory clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.

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ACTIVE NOT RECRUITING

NCT03085173

A Trial of "Armored" CAR T Cells Targeting CD19 For Patients With Relapsed CD19+ Hematologic Malignancies

The purpose of this phase I study is to test the safety of different dose levels of specially prepared cells collected from the patient called "modified T cells". The investigators want to find a safe dose of modified T cells for patients with this type of cancer that has progressed after standard therapy. The investigators also want to find out what effects these modified T cells have on the patient and the cancer. For patients who were treated, had progression of disease and were removed from study, duplicate enrollment is permitted if it is determined the patients could receive a benefit. If the patients meet all eligibility criteria, they can be enrolled onto study a second time as a new accrual, and receive treatment in a higher dose level cohort.

Gender: All

Ages: 18 Years - Any

Updated: 2026-04-07

1 state

Chronic Lymphocytic Leukemia (CLL)
Relapsed
Refractory
NOT YET RECRUITING

NCT07493330

Genotype-guided Targeted Agents Plus EZH2i for Primary Refractory PTCL

To evaluate the safety and efficacy of Zeprumetostat-based combination therapy, selected according to genotyping results, in patients with primary refractory peripheral T-cell lymphoma (PTCL).

Gender: All

Ages: 18 Years - Any

Updated: 2026-04-07

PTCL
Refractory
NOT YET RECRUITING

NCT07424092

Intratumoral DNX-2401 for High Grade Pediatric Brain Tumors

The goal of this clinical trial is to learn if intratumoral administration of DNX-2401 works to treat recurrent and refractory high grade brain tumors in children and young adults. It will also learn about the safety of DNX-2401. The main questions it aims to answer are: * Does a single intratumoral administration of DNX-2401 elicit tumor response and improve survival? * Is a single intratumoral administration of DNX-2401 safe and well tolerated? Participants will: * Undergo surgery for tumor biopsy followed by a single intratumoral administration of DNX-2401 * Visit the clinic periodically for checkups and tests

Gender: All

Ages: 1 Year - 25 Years

Updated: 2026-02-20

1 state

High Grade Glioma
Ependymoma
Embryonal Tumor of Brain
+4
RECRUITING

NCT07167381

xDRIVE for Florida-based Cancer Patients

Through this study funded by the Florida Cancer Innovation Fund, First Ascent will demonstrate state-wide feasibility of providing xDRIVE Functional Precision Medicine + Artificial Intelligence platform by assessing patient clinical benefit and health economics impacts. As this is a feasibility study, results will be returned to the physician and the physician may use the data to inform the next line of treatment. The investigator will run a prospective single-arm feasibility study providing the xDRIVE FPM AI platform to n = 210+ cancer patients throughout the state of Florida, especially those from underserved populations (pediatric patients and patients in Black, Brown, Hispanic, and rural communities).

Gender: All

Updated: 2025-12-23

1 state

Cancer
Neoplams
Refractory
+5
RECRUITING

NCT07295704

Micropulse Laser in Treatment of Initial and Refractory Cases of Center-Involved Diabetic Macular Edema

This study aims to evaluate the effect of subthreshold 577 nm micropulse laser photocoagulation in the treatment of initial and refractory cases of Center-Involved Diabetic Macular Edema.

Gender: All

Ages: 18 Years - Any

Updated: 2025-12-22

Micropulse Laser
Treatment
Initial
+2
RECRUITING

NCT06892145

Clinical Trial of CD19 Targeted CAR-T Cell in Refractory Adult SLE

This is a single-arm, open, dose-increasing and dose-expanding phase I clinical trial to investigate the safety, tolerability and cytodynamic characteristics of MC-1-50 cell preparation, and to preliminatively observe the efficacy of MC-1-50 cell preparation in patients with refractory SLE, and to explore the applicable dose regimen for phase II clinical trials.

Gender: All

Ages: 18 Years - Any

Updated: 2025-12-22

2 states

Systemic Lupus Erythematosus (SLE)
Refractory
NOT YET RECRUITING

NCT07287228

The Safety and Efficacy of Daratumumab in Patients With Refractory Aplastic Anemia

This study consists of two phases, phase Ib and phase II. The primary objective of phase Ib is to evaluate the safety and tolerability of multiple doses of daratumumab in patients with refractory aplastic anemia. The primary objective of phase II is to preliminarily assess the efficacy of multiple doses of daratumumab in patients with refractory aplastic anemia. Secondary objectives include evaluation of other efficacy endpoints, safety (phase II), and pharmacodynamic characteristics of multiple doses of daratumumab in these patients. The exploratory objective is to assess biological functional changes in peripheral blood and bone marrow before and after daratumumab treatment.

Gender: All

Ages: 18 Years - Any

Updated: 2025-12-17

1 state

Aplastic Anemia
Refractory
Relapse
RECRUITING

NCT06090864

ATLCAR.CD30.CCR4 for CD30+ HL ATLCAR.CD30.CCR4 Cells

Despite the progress in the therapy, Hodgkin's Lymphoma (HL) remains fatal for more than 15% of patients. Even in patients who are cured, the morbidity of therapy is substantial and long-lasting. New therapeutic agents are required therefore not only to further reduce mortality but also to alleviate morbidity. The majority of HL express the CD30 antigens. CD30 expression is routinely used for the diagnosis of HL. Preclinical observations support CD30 as a viable target of CAR-T therapy. This phase Ib/II study was conducted based on these observations. The purpose of this study is to determine the tolerability of ATLCAR.CD30.CCR4 cells in subjects with Hodgkin's Lymphoma and identify a recommended dose for further. This is a single-center, open-label phase Ib/II trial that uses a 3+3 design to identify a recommended phase 2 dose (RP2D) of ATLCAR.CD30.CCR4 cells in Hodgkin's Lymphoma. The phase II portion is designed to determine the PFS of ATLCAR.CD30.CCR4 in Hodgkin's Lymphoma. Subjects will be enrolled on 1 of 3 dose levels as determined by a 3+3 design. Up to 25 evaluable subjects may then be enrolled in the phase II portion of the study. Subjects may have cells procured to manufacture the ATLCAR.CD30.CCR4 cells if they meet eligibility for procurement. During the time period necessary to manufacture the ATLCAR.CD30.CCR4 cells, Subjects will be allowed to receive standard-of-care bridging therapy at the discretion of their local oncologist. Prior to cell infusion, subjects will undergo additional eligibility evaluations, and then if eligible, will undergo lymphodepletion followed by cell infusion 2-14 days later. Subjects will then be followed for 15 years as is required for studies involving gene transfer experiments.

Gender: All

Ages: 18 Years - Any

Updated: 2025-10-20

1 state

Hodgkin Lymphoma
Relapse
Refractory
ACTIVE NOT RECRUITING

NCT05911321

Isa-Pom-Dex in Elderly/Frail Subjects With RRMM

This research study aims to evaluate the safety and effectiveness of the combination of isatuximab, pomalidomide, and dexamethasone (Isa-Pd) for the treatment of relapsed or refractory multiple myeloma (RRMM), which refers to multiple myeloma that has returned or has not responded to prior treatment. The study will specifically investigate the impact of administering lower-than-standard doses of pomalidomide and dexamethasone. Using lower doses of pomalidomide and dexamethasone in this setting has not been approved by the Food and Drug Administration (FDA).

Gender: All

Ages: 18 Years - Any

Updated: 2025-10-20

1 state

Multiple Myeloma
Relapse
Refractory
+2
NOT YET RECRUITING

NCT07160192

Long-term Evaluation of Percutaneous Endoscopic Caecostomy in Refractory Constipation

This observational monocentric study aims to evaluate the long-term effectiveness and tolerance of percutaneous endoscopic caecostomy (PEC) in patients with chronic refractory constipation. Follow-up data will be collected through phone interviews and standardized quality of life questionnaires.

Gender: All

Ages: 18 Years - Any

Updated: 2025-09-08

1 state

Constipation
Refractory
RECRUITING

NCT06265545

Multicenter, Platform-type Clinical Study of Refractory/Recurrent Acute Myeloid Leukemia

To study the optimal therapeutic strategies for salvage treatment of refractory/relapsed AML, and to clarify the effectiveness and safety of various salvage treatment options. A prospective, multicenter, platform-type study was conducted to explore the overall response rate, tolerability, and survival of patients with R/R AML with different treatment regimens.

Gender: All

Updated: 2025-08-06

AML
Refractory
Relapsed
RECRUITING

NCT06622694

CD7 CAR T Cells (RD13-02) in the Treatment of Relapsed/Refractory Severe Aplastic Anemia

This trial is exploratory research aimed at evaluating the safety, tolerability, pharmacokinetics, pharmacodynamics, and efficacy of RD13-02, a universal CD7 CAR T therapy, in subjects with relapsed/refractory severe aplastic anemia (SAA)

Gender: All

Ages: 18 Years - 75 Years

Updated: 2025-07-24

1 state

Severe Aplastic Anemia
Relapse
Refractory
+1
ACTIVE NOT RECRUITING

NCT03179930

Combination Therapy With Entinostat and Pembrolizumab in Relapsed and Refractory Lymphomas

The purpose of this study is to test any good and bad effects of the study drugs called Pembrolizumab and Entinostat when used in combination to treat lymphoma. This combination could shrink the lymphoma but it could also cause side effects. Researchers also hope to learn whether adding entinostat to pembrolizumab can be more effective for patients with lymphoma than either drug alone.

Gender: All

Ages: 18 Years - Any

Updated: 2025-07-23

3 states

Lymphoma
Relapsed
Refractory
RECRUITING

NCT06424301

Targeting NUDT21 siRNA Drugs for Patients With Refractory Retinoblastoma

Retinoblastoma (RB) is the most common intraocular malignancy in children, accounting for approximately 11% of all cancers diagnosed in children under the age of one. Although its incidence is relatively low-about 1 in 15,000 to 20,000 live births-RB has a high risk of intracranial metastasis via the optic nerve, often leading to poor prognosis in advanced cases. Recent advances in administration routes, such as intravitreal and intra-arterial chemotherapy, have significantly improved eye preservation rates. However, these strategies are limited by cumulative retinal toxicity and drug resistance. In refractory cases, enucleation remains the only definitive treatment to prevent extraocular spread and death. In light of these challenges, current research efforts are focused on developing novel targeted therapies that enhance anti-tumor efficacy while minimizing local toxicity. In this context, we introduce a first-in-class siRNA-based drug targeting NUDT21, which promotes tumor regression by modulating the 3'UTR tail of SMC1A, thereby suppressing tumor cell proliferation. Importantly, the siRNA drug selectively targets tumor cells, offering a favorable safety profile compared to conventional chemotherapeutic regimens. Given that both the target (NUDT21) and the mode of administration (intraocular siRNA injection) are novel in retinoblastoma treatment, there is an urgent need for early-phase investigator-initiated clinical research. This study is therefore designed to assess the short-term safety and preliminary efficacy of NUDT21 siRNA in patients with refractory retinoblastoma, and to provide an evidence base for future large-scale clinical trials.

Gender: All

Ages: 6 Months - Any

Updated: 2025-06-26

Retinoblastoma
Refractory
RECRUITING

NCT06732232

A Dose Escalating Study of CD19/CD22/BCMA CAR-T Therapy in Relapsed/ Refractory Multiple Myeloma

This is a single arm, open-label, dose escalation clinical study to evaluate the safety and tolerability of autologouschimeric antigen receptor T (CAR-T) cells targeting CD19/CD22/BCMA in patients with relapsed/refractory multiple myeloma.

Gender: All

Ages: 18 Years - 75 Years

Updated: 2024-12-13

Relapsed
Refractory
Multiple Myeloma