ADC Therapeutics Reports First Quarter 2025 Financial Results and Provides Operational Update

In This Article:

LOTIS-7 abstract accepted for presentation at the European Hematology Association 2025 Congress (EHA2025) and the 18th International Conference on Malignant Lymphoma (ICML); ZYNLONTA® plus glofitamab demonstrated ORR of 95.5% and CR of 90.9% with encouraging safety and tolerability

Forty patient enrollment reached in LOTIS-7 trial dose expansion arm in patients with relapsed/refractory DLBCL

Cash runway expected to fund multiple catalysts into the second half of 2026

Company to host conference call today at 8:30 a.m. EDT

LAUSANNE, Switzerland, May 14, 2025 /PRNewswire/ -- ADC Therapeutics SA (NYSE: ADCT), a commercial-stage global leader and pioneer in the field of antibody drug conjugates (ADCs), today reported financial results for the first quarter ended March 31, 2025, and provided recent operational updates.

ADC Therapeutics logo (PRNewsfoto/ADC Therapeutics SA)
ADC Therapeutics logo (PRNewsfoto/ADC Therapeutics SA)

"We are encouraged by the promising LOTIS-7 abstract data, which we believe demonstrate the potential for ZYNLONTA® plus glofitamab to be a best-in-class combination in a dynamic market," said Ameet Mallik, Chief Executive Officer of ADC Therapeutics. "Coupled with the progress of our LOTIS-5 confirmatory trial, we are confident in our path forward and the potential of ZYNLONTA as we pursue the substantially larger opportunity in earlier lines of DLBCL therapy."

First Quarter 2025 Operational Updates & Recent Highlights

  • Abstract accepted for LOTIS-7 data presentations at EHA2025 and ICML. As of the abstract cutoff date of January 17, 2025, 31 patients received ≥1 ZYNLONTA dose and were safety evaluable, with 22 patients evaluable for efficacy. ZYNLONTA plus glofitamab (COLUMVI®) demonstrated an overall response rate (ORR) of 95.5% and complete response (CR) rate of 90.9%. Four of the efficacy evaluable patients (2 each at 120µg/kg and 150 µg/kg) converted to CR within 3 weeks after the data cutoff and are included as CRs. Twenty of 21 responders have remained in response and the median duration of response has not been reached. Manageable safety and tolerability were observed across all 31 safety evaluable patients. Updated data will be presented during a poster session on Saturday, June 14 at 12:30 p.m. ET at EHA2025 taking place in Milan, Italy from June 12–15, 2025 and an oral presentation at ICML taking place in Lugano, Switzerland from June 17-21, 2025.

  • Enrollment of 40 patients reached in LOTIS-7 dose expansion arm. Forty patients have been enrolled in the dose expansion arm of the Phase 1b clinical trial evaluating the safety and efficacy of ZYNLONTA in combination with the bispecific antibody glofitamab in patients with r/r DLBCL. The Company expects to provide an update on the LOTIS-7 trial in the second half of 2025.

  • Abstract accepted for LOTIS-5 trial safety run-in data presentation at EHA2025. As of the abstract cutoff date of October 4, 2024, the safety run-in data included 20 patients, from LOTIS-5, a Phase 3, randomized trial of ZYNLONTA plus rituximab in patients with r/r DLBCL. Fixed treatment duration of this combination showed no new safety signals and demonstrated encouraging antitumor activity, with signs of durable responses in r/r DLBCL/HGBL patients >28 months after end of treatment. The data will be presented during a poster session on Saturday, June 14 at 12:30 p.m. ET at EHA2025.

  • LOTIS-5 remains on track to reach prespecified progression-free survival (PFS) events by end of 2025. After the prespecified number of PFS events is reached and data are available, the Company expects to provide topline data on the Phase 3 confirmatory trial evaluating ZYNLONTA in combination with rituximab in patients with 2L+ DLBCL.

  • Abstract accepted for presentation of marginal zone lymphoma (MZL) data at ICML. A poster entitled, "Updated analysis of a phase 2 multicenter study of the loncastuximab in relapsed/refractory marginal zone lymphoma demonstrates high rate of complete responses" will be presented at ICML. This single-arm, open-label investigator-initiated study is being conducted at the Sylvester Comprehensive Cancer Center at University of Miami and City of Hope, and led by Izidore Lossos, MD, Professor, Director, Lymphoma Program at the Sylvester Comprehensive Cancer Center, University of Miami.

  • Discontinuation of ADCT-602 trial. Based on the available clinical data, the Phase 1/2 ADCT-602 clinical trial, sponsored by The University of Texas MD Anderson Cancer Center, evaluating ADCT-602 in patients with r/r B-cell acute lymphoblastic leukemia will be discontinued.

  • Preclinical programs highlighted at the American Association for Cancer Research (AACR) Annual Meeting 2025. Data from preclinical studies of our exatecan-based ADCs targeting Claudin-6 (CLDN6), prostate-specific membrane antigen (PSMA), and Alanine, Serine, Cysteine Transporter 2 (ASCT2) were featured.