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Recruiting Phase 1 NCT06977711

NCT06977711 Loncastuximab and Roflumilast Added to R-CHOP (Lo-(Rituximab and Roflumilast) RR-CHOP) for Naïve High-Risk Diffuse Large B-cell Lymphoma (DLBCL)

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Clinical Trial Summary
NCT ID NCT06977711
Status Recruiting
Phase Phase 1
Sponsor The University of Texas Health Science Center at San Antonio
Condition Diffuse Large B-cell Lymphoma
Study Type INTERVENTIONAL
Enrollment 10 participants
Start Date 2025-06-20
Primary Completion 2026-10-15

Eligibility & Interventions

Sex All sexes
Min Age 18 Years
Max Age N/A
Study Type INTERVENTIONAL
Interventions
LoncastuximabRoflumilastRituximab

Eligibility Fast-Check

Enter your details for a quick preliminary check. This does not replace medical advice.

What to Expect as a Participant

You will actively receive the study intervention — which may be a drug, biologic, device, or procedure.

Phase 1 is the earliest stage of human testing — safety and dosage are the primary focus. Visits are frequent and medical supervision is intensive. You will be among the first people to receive this treatment.

This trial targets 10 participants in total. It began in 2025-06-20 with a primary completion date of 2026-10-15.

⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.

Brief Summary

This study is developed by the investigator and is a, phase I, single arm, clinical trial that will enroll subjects with untreated diffuse large B-cell lymphoma (DLCBL) at high risk for poor outcome. The types of treatments given will be shared with participants. The aims are: 1. To assess the safety and how well the participants tolerate the treatment 2. Assess the response of the tumor to treatment to estimate complete response 3. Assess the response of the tumor to treatment to estimate progression-free survival

Eligibility Criteria

Inclusion Criteria: 1. Men and women 18 years of age or older. 2. Pathologically proven diffuse large B-cell lymphoma (DLBCL) not otherwise specified (NOS). \- Patients with Diffuse large B-cell lymphoma/ high grade B-cell lymphoma with MYC (myelocytomatosis oncogene) and BCL2 (B-cell lymphoma 2) rearrangements are allowed. 3. No prior systemic therapy for lymphoma. 4. Subject has provided informed consent. 5. Subject is willing and able to comply with clinic visits and procedure outlined in the study protocol. 6. Eastern Cooperative Oncology Group (ECOG) performance status of 0-2. 7. Life expectancy of ≥3 months. 8. Ann Arbor stage II-IV 9. National Comprehensive Cancer Network - International Prognostic Index (NCCN-IPI) risk score of ≥ 2 10. Measurable disease, meaning at least 1 lymph node or other lymphomatous lesion with a long axis of ≥1.5 cm by CT imaging, and at least one FDG-avid lesion by FDG-PET scan. 11. Left ventricular ejection fraction of at least 45% by either echocardiography or radionucleotide angiography. 12. Ability to swallow oral tablets without difficulty. 13. All subjects with preserved reproductive potential must agree to practice abstinence or employ contraceptive measures for the duration of treatment and for 10 months (if female) or 7 months (if male) following final dosing. All male subjects are considered to have reproductive potential. Female subjects of reproductive potential are those who: i) are not at least 50 years old and have no menses for 24 consecutive months; or ii) have not been rendered surgically sterile (having undergone hysterectomy and/or bilateral salpingo-oophorectomy). Female subjects of reproductive potential must have a negative serum pregnancy test (minimum sensitivity 25 IU/L or equivalent units of human chorionic gonadotropin (hCG) within 7 days of first day of drug dosing. 14. Meet the following clinical laboratory requirements: * Creatinine clearance ≥30 ml/min by Cockcroft-Gault formula; * Total bilirubin ≤ 1.5 × upper limit of normal (ULN) (unless indirect bilirubin is elevated due to Gilbert's syndrome or hemolysis); * Aspartate aminotransferase (AST) and alanine aminotransferase (ALT)≤ 3 × ULN; * Platelet count ≥ 50,000/µL, with or without transfusion support; * Absolute Neutrophil Count (ANC) ≥ 1000/µL, with or without chronic granulocyte growth factor support; * Hemoglobin ≥8 g/dL, with or without transfusion support. Exclusion Criteria: 1. Allergy or intolerance to roflumilast. 2. Allergy or intolerance to loncastuximab 3. Any active malignancy other than DLBCL 4. Current participation in another interventional clinical study 5. Prior allogeneic bone marrow transplant within 12 months of screening date. 6. Prior autologous stem cell transplant within 6 months of screening date. 7. Immunotherapy, chemotherapy, radiotherapy, or investigational therapy within 6 months prior to drug dosing. 8. Active central nervous system (CNS) involvement by lymphoma, including untreated symptomatic epidural disease. 9. Active uncontrolled infection. 10. Poorly controlled depressive symptoms and/ or currently under management for depression that is poorly controlled. 11. Significant disease or medical conditions, as assessed by the Investigator and Sponsor, that would substantially increase the risk benefit ratio of participating in the study. This includes, but is not limited to, acute myocardial infarction within the last 6 months, unstable angina, uncontrolled diabetes mellitus, significant active infections, and congestive heart failure New York Heart Association Class III-IV. 12. Second malignancy, except treated basal cell or localized squamous skin carcinomas, localized prostate cancer, or other malignancies for which subjects are not on active anti-cancer therapies and have had no evidence of active malignancy for at least 1 year. 13. History of major surgery within 3 weeks or minor surgery within 1 week of roflumilast administration. Major surgery includes, for example, any open or laparoscopic entry into a body cavity, or operative repair of fracture; minor surgery includes, for example, open surgical biopsy of palpable/superficial lymph node, or placement of vascular access device. 14. Other medical or psychiatric illnesses or organ dysfunction, which in the opinion of the investigator, would either compromise the subject's safety or interfere with the evaluation of the safety of the study agent. 15. Corrected QT interval (QTc) prolongation (defined as a QTc \>450 ms for males and \>470 ms for females -Fridericia's correction-) or other clinically significant ECG abnormalities as assessed by the investigator. 16. Baseline serum troponin above the upper limit of normal. 17. Baseline serum brain natriuretic peptide (BNP )above the age-adjusted upper limit of normal. 18. Baseline amylase above the upper limit of normal. 19. Subjects known to be HIV-positive must not have multi-drug resistant HIV infection, cluster of differentiation 4 (CD4) counts \< 150/µl or other concurrent AIDS-defining conditions. Serologic screening for HIV is required within the 6 months prior to study enrollment. 20. Subjects positive for Hepatitis B surface antigen (HBsAg) or Hepatitis C-virus ribonucleic acid (HCV RNA), unless both AST and ALT≤1.25 x ULN and there is no known history of chronic active hepatitis. Serologic screening for hepatitis B and C testing is required within the 6 months prior to study enrollment. 21. Subjects with moderate or severe liver impairment, as defined by a Child-Pugh class of B or C. 22. Women who are pregnant or breastfeeding. 23. Current use of any of the following medications: boceprevir, carbamazepine, ciprofloxacin, cobicistat, conivaptan, enzalutamide, fluvoxamine, itraconazole, ketoconazole, mitotane, phenytoin, posaconazole, rifampin, ritonavir, St. John's Wort, telaprevir, voriconazole, or zafirlukast. 24. Current use of non-nucleoside reverse transcriptase inhibitors (NNRTI) including efavirenz, rilpivirine, etravirine, delavirdine, nevirapine, and lersivirine.

Contact & Investigator

Central Contact

Adolfo Diaz Duque, MD

✉ diazduque@uthscsa.edu

📞 210-450-5904

Principal Investigator

Adolfo E Diaz Duque, MD

PRINCIPAL INVESTIGATOR

The University of Texas Health Science Center at San Antonio

Frequently Asked Questions

Who can join the NCT06977711 clinical trial?

This trial is open to participants of all sexes, aged 18 Years or older, studying Diffuse Large B-cell Lymphoma. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.

What phase is the NCT06977711 trial and what does that mean for participants?

Phase 1 trials are the first stage of human testing. The primary goal is to assess safety and determine appropriate dosage levels. Participants are closely monitored. These trials typically involve a small number of volunteers.

Is NCT06977711 currently recruiting?

Yes, NCT06977711 is actively recruiting participants. Contact the research team at diazduque@uthscsa.edu for enrollment information.

Where is the NCT06977711 trial being conducted?

This trial is being conducted at San Antonio, United States, San Antonio, United States.

Who is sponsoring the NCT06977711 clinical trial?

NCT06977711 is sponsored by The University of Texas Health Science Center at San Antonio. The principal investigator is Adolfo E Diaz Duque, MD at The University of Texas Health Science Center at San Antonio. The trial plans to enroll 10 participants.

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ClinicalMetric — Independent clinical trial intelligence platform. Not affiliated with NIH, ClinicalTrials.gov, the U.S. FDA, or any pharmaceutical company, hospital, or clinical research organization. Trial data is sourced from ClinicalTrials.gov for informational purposes only and does not constitute medical advice. Do not make any treatment, enrollment, or health decisions based solely on information found here — always consult a qualified healthcare professional. Full Disclaimer  ·  Last Reviewed: July 2026  ·  Data Methodology