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A Prospective, Open-label, Randomized, Multicenter Phase-III Trial to Evaluate the Efficacy of Pirtobrutinib and Epcoritamab Compared With R-(Mini)-CHOP for Treatment of Patients With DLBCL-type Richter Transformation (CLLRT2)

28. oktober 2026 oppdatert av: German CLL Study Group

The aim of the trial is to Evaluate the Efficacy of Pirtobrutinib and Epcoritamab Compared With R-(Mini)-CHOP for Treatment of Patients With DLBCL-type Richter Transformation

Studieoversikt

Status

Rekruttering

Forhold

Intervensjon / Behandling

Detaljert beskrivelse

This trial is a phase 2 study and - according to the definitions of the ICH Harmonized Tripartite Guide-line E8 - a therapeutic exploratory type of study, which is designed as a prospective, multicenter, open label trial. The trial aims to investigate the efficacy and safety of a fixed-duration treatment ap-proach in patients aged 80 years or older and/or those exhibiting symptoms of frailty.

Studietype

Intervensjonell

Registrering (Antatt)

116

Fase

  • Fase 2

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

  • Australia
      • Melbourne, Australia, 3000
        • Rekruttering
        • Peter MacCallum Cancer Center
        • Ta kontakt med:
  • Danmark
      • Copenhagen, Danmark, 2100
  • Irland
      • Dublin, Irland, Dublin 9
      • Galway, Irland, H91 YR71
        • Rekruttering
        • University Hospital Galway
        • Ta kontakt med:
  • Tyskland
      • Cologne, Tyskland, 50937
      • Dresden, Tyskland, 01307
        • Har ikke rekruttert ennå
        • Technische Universitaet Dresden
        • Ta kontakt med:
      • Frankfurt, Tyskland, 60590
      • Heidelberg, Tyskland, 69120
      • Kiel, Tyskland, 24105
        • Har ikke rekruttert ennå
        • Universitätsklinikum Schleswig-Holstein Campus Kiel
        • Ta kontakt med:
      • Ulm, Tyskland, 89081
  • Østerrike
      • Innsbruck, Østerrike, 6020
        • Har ikke rekruttert ennå
        • Medizinische Universitaet Innsbruck
        • Ta kontakt med:
      • Vienna, Østerrike, 1090

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

18 år og eldre (Voksen, Eldre voksen)

Tar imot friske frivillige

Nei

Kjønn som er kvalifisert for studier

Alle

Beskrivelse

Inclusion Criteria:

  1. Age ≥80 years OR considered frail defined by a frailty score of >2 on the FRAIL scale via the patient´s assessment

  2. Has documented treatment-naïve CLL or small lymphocytic lymphoma (SLL) according to iwCLL 2018 criteria3

  3. CLL/SLL requiring treatment according to the iwCLL 2018 criteria3

  4. Adequate marrow function independent of growth factor or transfusion support within 2 weeks of screening as follows, unless cytopenia is due to marrow involvement of CLL:

    • Absolute neutrophil count ≥ 1.0 × 10^9/L
    • Platelet counts ≥ 30 × 10^9/L; in cases of thrombocytopenia clearly due to marrow in-volvement of CLL (per the discretion of the investigator); platelet count should be ≥ 10 × 10^9/L if there is bone marrow involvement
    • Total haemoglobin ≥ 9 g/dL (without transfusion support, unless anaemia is due to mar-row involvement of CLL)

  5. Adequate liver function as indicated by a total bilirubin, AST, and ALT ≤2 times the institutional upper limit of normal (ULN) value unless directly attributable to the patient's CLL or Gilbert's syndrome

  6. Adequate renal function defined by a value ≥30 mL/min, determined either by creatinine clearance directly measured with a 24-hour urine collection or via estimated GFR calculated according to the CKD-EPI equation or Cystatin C measurements (e.g. in sarcopenic patients).

  7. Negative serological testing for hepatitis B (HBsAg negative and anti-HBc negative; patients positive for anti-HBc may be included if PCR for HBV DNA is negative and HBV-DNA PCR is performed repeatedly until 6 months after last month of treatment), negative testing for hepa-titis C RNA within 6 weeks prior to registration

  8. Life expectancy ≥ 3 months

  9. In case of a recent previous (i.e. debulking) treatment, patients must have recovered from acute toxicities and treatment regimen must be stopped within the following time periods be-fore start of the study treatment in the CLL-Frail2 trial:

    • chemotherapy ≥ 28 days
    • antibody treatment ≥ 14 days
    • corticosteroids may be applied until the start of the study therapy; these have to be re-duced to an equivalent of ≤ 20mg prednisolone per day during treatment

  10. Signed informed consent and, in the investigator's judgment, able to comply with the study protocol

  11. Ability and willingness to provide written informed consent and to adhere to the study visit schedule and other protocol requirements

Exclusion Criteria:

  • 1. Previous CLL-directed therapies 2. Transformation of CLL to aggressive NHL (Richter's transformation or pro-lymphocytic leu-kaemia) 3. Patients with a history of confirmed progressive multifocal leukoencephalopathy (PML) 4. Uncontrolled autoimmune condition 5. Malignancies other than CLL currently requiring systemic therapies (unless the malignant dis-ease is in a stable remission at the discretion of the treating physician) 6. Uncontrolled infection currently requiring systemic treatment 7. Any serious medical condition or abnormality in clinical laboratory tests that, in the investiga-tor's judgment, precludes the patient's safe participation in and completion of the study 8. Requirement of treatment with any moderate or strong CYP3A4 inhibitor or strong CYP3A4 inducer (≤ 14 days or 5 half-lives, whichever is shorter) before the first dose of study drug, or requiring ongoing treatment with a moderate or strong CYP3A inhibitor or a strong CYP3A in-ducer.

    9. Requirement of therapy with phenprocoumon or other vitamin K antagonists 10. Known active infection with HIV, or serologic status reflecting active hepatitis B or C infection as follows:

    • Presence of hepatitis B surface antigen (HBsAg) or hepatitis B core antibody (HBcAb). Patients with presence of HBcAb, but absence of HBsAg, are eligible if hepatitis B virus (HBV) DNA is undetectable (< 20 IU), and if they are willing to undergo monitoring for HBV reactivation

    • Presence of hepatitis C virus (HCV) antibody. Patients with presence of HCV antibody are eligible if HCV RNA is undetectable 11. Major surgery within 4 weeks of the first dose of study drug 12. Any uncontrolled or clinically significant cardiovascular disease including the following:

    • New York Heart Association class III or IV congestive heart failure

    • History of clinically significant arrhythmias (eg, sustained ventricular tachycardia, ventricu-lar fibrillation, torsades de pointes) 13. History of severe bleeding disorder such as hemophilia A, hemophilia B, von Willebrand dis-ease if not CLL/SLL related, or history of spontaneous bleeding requiring blood transfusion or other medical intervention 14. Unable to swallow capsules or disease significantly affecting gastrointestinal function such as malabsorption syndrome, resection of the stomach or small bowel, bariatric surgery proce-dures, symptomatic inflammatory bowel disease, or partial or complete bowel obstruction.

      15. Use of investigational agents, e.g. monoclonal antibodies or other experimental drugs within clinical trials, which might interfere with the study drug within 28 days (or 5 times half-life [t1/2] of the compound, whichever is longer) prior to registration 16. Known hypersensitivity to zanubrutinib or sonrotoclax or any of the excipients 17. Pregnant women and nursing mothers (a negative pregnancy test is required for all women of childbearing potential within 7 days before start of treatment) 18. Fertile men or women of childbearing potential unless:

    • surgically sterile or ≥ 2 years after the onset of menopause, or

    • willing to use two methods of reliable contraception including one highly effective contra-ceptive method (Pearl Index <1) and one additional effective (barrier) method during study treatment and for 7 days after sonrotoclax and 30 days after zanubrutinib respec-tively 19. Vaccination with a live vaccine <28 days prior to registration 20. Legal incapacity 21. Prisoners or subjects who are institutionalized by regulatory or court order 22. Persons who are in dependence to the sponsor or an investigator

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Behandling
  • Tildeling: Randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Ingen (Open Label)

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Aktiv komparator: Arm A: R-(mini)-CHOP

Cycle 1-6 Day 1: Cyclophosphamide 750 mg/m2 iv Doxorubicin 50 mg/m2 iv Vincristine 1.4 mg/m2 (max 2 mg) iv Rituximab 375 mg/m2 iv Day 1-5: Prednisolone 100 mg po

If R-CHOP-ineligible*, R-mini-CHOP3 is administered:

Cycle 1-6 Day 1: Cyclophosphamide 400 mg/m2 iv Doxorubicin 25 mg/m2 iv Vincristine 1 mg iv Rituximab 375 mg/m2 iv or sc Day 1-5: Prednisolone 100 mg po
Legemiddel: Cyclophosphamide

750 mg/m2 iv (R-CHOP) or 400 mg/m2 iv (R-mini-CHOP)

Legemiddel: Doxorubicin

50 mg/m2 iv (R-CHOP) or 25 mg/m2 iv (R-mini-CHOP)

Legemiddel: Vincristine

1.4 mg/m2 iv (R-CHOP) or 1 mg/m2 iv (R-mini-CHOP)

Legemiddel: Rituximab

375 mg/m2 iv (R-CHOP) or 375 mg/m2 iv or sc (R-mini-CHOP)
Eksperimentell: Arm B: Epcoritamab-Pirtobrutinib

12 cycles: Cycle 1 Day 1-21: Pirtobrutinib 200 mg QD po Day 1: Epcoritamab 0.16 mg sc Day 8: Epcoritamab 0.8 mg sc Day 15: Epcoritamab 48 mg sc

Cycle 2-4 Day 1-21: Pirtobrutinib 200 mg QD po Day 1, 8, 15: Epcoritamab 48 mg sc

Cycle 5+6 Day 1-21: Pirtobrutinib 200 mg QD po Day 1: Epcoritamab 48 mg sc

Cycle 7-12:

Day 1-28: Pirtobrutinib 200 mg QD po Day 1: Epcoritamab 48 mg sc

For patients with CR, PR or SD after 12 cycles (=EO[C]T), maintenance treatment with pirtobrutinib 200 mg QD until unacceptable toxicity, disease progression or allogeneic stem cell transplantation will be offered.
Biologisk: Epcoritamab

Cycle 1 Day 1-21: Pirtobrutinib 200 mg QD po Day 1: Epcoritamab 0.16 mg sc Day 8: Epcoritamab 0.8 mg sc Day 15: Epcoritamab 48 mg sc

Cycle 2-28 Epcoritamab 48 mg sc

Andre navn:
  • Epkinly®
Legemiddel: Pirtobrutinib

Pirtobrutinib 200 mg QD po

Andre navn:
  • Jaypirca®

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
PFS
Tidsramme: approx. 40 months after first subject in

Investigator-assessed progression-free survival (PFS) according to Lugano criteria
approx. 40 months after first subject in

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
ORR
Tidsramme: approx. 40 months after first subject in

Overall response rate (ORR) at the end of (combination) treatment according to Lugano criteria
approx. 40 months after first subject in
CRR
Tidsramme: approx. 40 months after first subject in

Complete response rate (CRR) at the end of (combination) treatment according to Lugano criteria
approx. 40 months after first subject in
Best response according to Lugano criteria
Tidsramme: approx. 40 months after first subject in

Best response according to Lugano criteria
approx. 40 months after first subject in
Undetectable minimal residual disease (uMRD)
Tidsramme: approx. 40 months after first subject in

Undetectable minimal residual disease (uMRD) rates in peripheral blood at the end of (combination) treatment
approx. 40 months after first subject in
DOR
Tidsramme: approx. 40 months after first subject in

Duration of response (DOR) according to Lugano criteria
approx. 40 months after first subject in
Overall survival (OS)
Tidsramme: approx. 40 months after first subject in

Overall survival (OS)
approx. 40 months after first subject in
TTNT
Tidsramme: approx. 40 months after first subject in

Time to next treatment (TTNT)
approx. 40 months after first subject in
TFS
Tidsramme: approx. 40 months after first subject in

Treatment-free survival (TFS)
approx. 40 months after first subject in
SCT
Tidsramme: approx. 40 months after first subject in

Proportion of patients receiving allogeneic stem cell transplantation (SCT) for consolidation
approx. 40 months after first subject in

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

German CLL Study Group

Samarbeidspartnere

Nordic CLL Study Group (NCLLSG)
The Australasian Leukaemia & Lymphoma Group (ALLG)
Cancer Trials Ireland (CTI)
Fondazione GIMEMA

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Faktiske)

18. juni 2026

Primær fullføring (Antatt)

15. mai 2030

Studiet fullført (Antatt)

15. mai 2030

Datoer for studieregistrering

Først innsendt

28. oktober 2026

Først innsendt som oppfylte QC-kriteriene

28. oktober 2026

Først lagt ut (Faktiske)

5. november 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

5. november 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

28. oktober 2026

Sist bekreftet

1. oktober 2026

Mer informasjon

Begreper knyttet til denne studien

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • CLLRT2

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

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