Collaboration Agreements

9 Months Ended

Sep. 30, 2019

Collaboration Agreement [Abstract]

Collaboration Agreements

Collaboration Agreements

AstraZeneca/MedImmune

In June 2018, the Company entered into a clinical collaboration with AstraZeneca PLC ("AstraZeneca") and its global biologics research and development arm, MedImmune, to evaluate in Phase 1/2 studies the safety and efficacy of combining AstraZeneca’s Imfinzi^® (durvalumab), a human monoclonal antibody directed against programmed cell death ligand 1 ("PD-L1"), with sacituzumab govitecan as a treatment of patients with triple-negative breast cancer (“TNBC”) and urothelial cancer ("UC"), which was broadened in October 2018 to include second-line metastatic non-small cell lung cancer ("NSCLC").

Part one of the two-part Phase 1/2 studies will be co-funded by the two companies. Immunomedics will supply the study drug and AstraZeneca will utilize its existing clinical trial infrastructure to accelerate the enrollment of the sacituzumab govitecan and durvalumab combination. The trial design allows for rapid transition into randomized Phase 2 studies should the first part of these studies show promising data and the companies agree to proceed based on efficacy and safety results obtained.

The collaboration terminates thirty days following the expiration of the study periods end-date. Either party may terminate the collaboration earlier by providing thirty days' written notice.

GBG Forschungs GmbH

In September 2019, the Company entered into a clinical collaboration with GBG Forschungs-GmbH ("GBG"), Neu-Isenburg, Germany, to develop sacituzumab govitecan as a treatment for newly-diagnosed breast cancer patients who do not achieve a pathological complete response ("pCR") following standard neoadjuvant therapy.

The multinational, post-neoadjuvant Phase 3 SASCIA study developed by GBG will be conducted under the sponsorship of GBG. Approximately 1,200 high-risk patients with newly-diagnosed HER2-negative breast cancer not achieving a pCR following standard neoadjuvant therapy will be randomized to receive either sacituzumab govitecan or treatment of physician’s choice. Primary endpoint is invasive DFS with overall survival, patient reported outcome/quality of life, circulating tumor DNA clearance, and safety serving as secondary endpoints.

Under the terms of the agreement, GBG is eligible to receive up to €33.0 million in potential clinical and regulatory milestone payments over a span of approximately six years, of which €0.5 million to be paid at signing which is included in accrued expenses as of September 30, 2019. The collaboration terminates following the completion of the study or until either party terminates the collaboration earlier by providing thirty days' written notice.