Comparison of the Treatments of Obinutuzumab + Venetoclax Versus Obinutuzumab + Chlorambucil in Patients With Chronic Lymphocytic Leukemia

Summary

This open-label, multicenter, randomized Phase III study is designed to compare the efficacy and safety of a combined regimen of obinutuzumab and venetoclax versus obinutuzumab + chlorambucil in participants with chronic lymphocytic leukemia (CLL) and coexisting medical conditions. The time on study treatment was approximately one year and the follow-up period will be up to 9 years

Timeline

Start

2014-12-31

Primary completion

2018-08-17

Completion

2025-08-27

Outcome

Met primary endpoint

paper patients given venetoclax plus obinutuzumab had a significantly longer progression-free survival than did patients given chlorambucil plus obinutuzumab (HR 0·31, 95% CI 0·22-0·44; p<0·0001). PMID 32888452 ↗

release “the pivotal Phase III CLL14 study in previously untreated chronic lymphocytic leukemia (CLL) showing that Venclexta® (venetoclax) plus Gazyva® (obinutuzumab) met its primary endpoint” gene.com ↗

Publications

• Munir T, Martinez-Calle N, Xu S, Yang K, Ge X, Ali AK, Mohseninejad L, Dobi B, Rakonczai P, Ma H, Williams R, Aldairy W, Lamanna N. Indirect Comparisons of the Efficacy and Safety of Zanubrutinib versus Venetoclax plus Obinutuzumab in Treatment-Naive Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma. Oncol Ther. 2025 Dec;13(4):1055-1070. doi: 10.1007/s40487-025-00380-0. Epub 2025 Sep 13.
• Al-Sawaf O, Robrecht S, Zhang C, Olivieri S, Chang YM, Fink AM, Tausch E, Schneider C, Ritgen M, Kreuzer KA, Sivchev L, Niemann CU, Schwarer A, Loscertales J, Weinkove R, Strumberg D, Kilfoyle A, Manzoor BS, Jawaid D, Emechebe N, Devine J, Boyer M, Runkel ED, Eichhorst B, Stilgenbauer S, Jiang Y, Hallek M, Fischer K. Venetoclax-obinutuzumab for previously untreated chronic lymphocytic leukemia: 6-year results of the randomized phase 3 CLL14 study. Blood. 2024 Oct 31;144(18):1924-1935. doi: 10.1182/blood.2024024631.
• Langerbeins P, Giza A, Robrecht S, Cramer P, von Tresckow J, Al-Sawaf O, Fink AM, Furstenau M, Kutsch N, Simon F, Goede V, Hoechstetter M, Niemann CU, da Cunha-Bang C, Kater A, Dubois J, Gregor M, Staber PB, Tausch E, Schneider C, Stilgenbauer S, Eichhorst B, Fischer K, Hallek M. Reassessing the chronic lymphocytic leukemia International Prognostic Index in the era of targeted therapies. Blood. 2024 Jun 20;143(25):2588-2598. doi: 10.1182/blood.2023022564.
• Al-Sawaf O, Zhang C, Jin HY, Robrecht S, Choi Y, Balasubramanian S, Kotak A, Chang YM, Fink AM, Tausch E, Schneider C, Ritgen M, Kreuzer KA, Chyla B, Paulson JN, Pallasch CP, Frenzel LP, Peifer M, Eichhorst B, Stilgenbauer S, Jiang Y, Hallek M, Fischer K. Transcriptomic profiles and 5-year results from the randomized CLL14 study of venetoclax plus obinutuzumab versus chlorambucil plus obinutuzumab in chronic lymphocytic leukemia. Nat Commun. 2023 Apr 18;14(1):2147. doi: 10.1038/s41467-023-37648-w.
• Badawi M, Chen X, Marroum P, Suleiman AA, Mensing S, Koenigsdorfer A, Schiele JT, Palenski T, Samineni D, Hoffman D, Menon R, Salem AH. Bioavailability Evaluation of Venetoclax Lower-Strength Tablets and Oral Powder Formulations to Establish Interchangeability with the 100 mg Tablet. Clin Drug Investig. 2022 Aug;42(8):657-668. doi: 10.1007/s40261-022-01172-4. Epub 2022 Jul 13.
• Samineni D, Gibiansky L, Wang B, Vadhavkar S, Rajwanshi R, Tandon M, Sinha A, Al-Sawaf O, Fischer K, Hallek M, Salem AH, Li C, Miles D. Pharmacokinetics and Exposure-Response Analysis of Venetoclax + Obinutuzumab in Chronic Lymphocytic Leukemia: Phase 1b Study and Phase 3 CLL14 Trial. Adv Ther. 2022 Aug;39(8):3635-3653. doi: 10.1007/s12325-022-02170-w. Epub 2022 Jun 16.
• Al-Sawaf O, Zhang C, Lu T, Liao MZ, Panchal A, Robrecht S, Ching T, Tandon M, Fink AM, Tausch E, Schneider C, Ritgen M, Bottcher S, Kreuzer KA, Chyla B, Miles D, Wendtner CM, Eichhorst B, Stilgenbauer S, Jiang Y, Hallek M, Fischer K. Minimal Residual Disease Dynamics after Venetoclax-Obinutuzumab Treatment: Extended Off-Treatment Follow-up From the Randomized CLL14 Study. J Clin Oncol. 2021 Dec 20;39(36):4049-4060. doi: 10.1200/JCO.21.01181. Epub 2021 Oct 28.
• Al-Sawaf O, Zhang C, Tandon M, Sinha A, Fink AM, Robrecht S, Samoylova O, Liberati AM, Pinilla-Ibarz J, Opat S, Sivcheva L, Le Du K, Fogliatto LM, Niemann CU, Weinkove R, Robinson S, Kipps TJ, Tausch E, Schary W, Ritgen M, Wendtner CM, Kreuzer KA, Eichhorst B, Stilgenbauer S, Hallek M, Fischer K. Venetoclax plus obinutuzumab versus chlorambucil plus obinutuzumab for previously untreated chronic lymphocytic leukaemia (CLL14): follow-up results from a multicentre, open-label, randomised, phase 3 trial. Lancet Oncol. 2020 Sep;21(9):1188-1200. doi: 10.1016/S1470-2045(20)30443-5.
• Fischer K, Al-Sawaf O, Bahlo J, Fink AM, Tandon M, Dixon M, Robrecht S, Warburton S, Humphrey K, Samoylova O, Liberati AM, Pinilla-Ibarz J, Opat S, Sivcheva L, Le Du K, Fogliatto LM, Niemann CU, Weinkove R, Robinson S, Kipps TJ, Boettcher S, Tausch E, Humerickhouse R, Eichhorst B, Wendtner CM, Langerak AW, Kreuzer KA, Ritgen M, Goede V, Stilgenbauer S, Mobasher M, Hallek M. Venetoclax and Obinutuzumab in Patients with CLL and Coexisting Conditions. N Engl J Med. 2019 Jun 6;380(23):2225-2236. doi: 10.1056/NEJMoa1815281. Epub 2019 Jun 4.

Drugs

Evaluation	Drug	Modality	Dose	Route
Subject	Chlorambucil	Other / unclassified	0.5 mg/kg	Oral
Subject	Venetoclax	Small molecule	400 mg	Oral
Background	Obinutuzumab	Monoclonal antibody	1000 mg	Intravenous

Indications