On August 3, 2023 Merrimack Pharmaceuticals, Inc. (Nasdaq: MACK) [("Merrimack" or the "Company")] reported its second quarter 2023 financial results for the period ended June 30, 2023 (Press release, Merrimack, AUG 3, 2023, View Source [SID1234633754]).
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"We were excited to see the announcement from Ipsen that the U.S. Food and Drug Administration (FDA) had accepted its supplemental new drug application (sNDA) Onivyde (irinotecan liposome injection) plus 5 fluorouracil/leucovorin and oxaliplatin (NALIRIFOX regimen) as a potential first-line treatment for metastatic pancreatic ductal adenocarcinoma (mPDAC) and that the FDA had provided a Prescription Drug User Fee Act goal date of 13 February 2024 for review of the application" said Gary Crocker, Chairman of Merrimack’s Board of Directors. "We will continue to monitor the progress of this program which, if approved, would entitle Merrimack to a $225 million milestone payment from Ipsen."
Second Quarter 2023 Financial Results
Merrimack reported a net loss of $391 thousand for the second quarter ended June 30, 2023, or $0.03 per basic and diluted share on a fully diluted basis, compared to a net loss of $478 thousand, or $0.04 per basic and diluted share on a fully diluted basis, for the same period in 2022.
Interest income in the second quarter ended June 30, 2023, was $178 thousand compared to $8 thousand for the same period in 2022.
General and administrative expenses for the second quarter ended June 30, 2023, were $569 thousand, compared to $486 thousand for the same period in 2022.
As of June 30, 2023, Merrimack had cash, cash equivalents and short term investments of $19.0 million, compared to $19.4 million as of December 31, 2022.
As of June 30, 2023, Merrimack had 14.3 million shares of common stock outstanding.
Updates on Programs Underlying Potential Milestone Payments
Ipsen
Metastatic Pancreatic Ductal Adenocarcinoma
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In November 2022, Ipsen announced the Phase III NAPOLI 3 trial of Onivyde (irinotecan liposome injection) plus 5-fluorouracil/leucovorin and oxaliplatin (the "NALIRIFOX regimen") met its primary endpoint demonstrating clinically meaningful and statistically significant improvement in overall survival compared to nab-paclitaxel plus gemcitabine in 770 previously untreated patients with mPDAC and key secondary efficacy outcome of progression-free survival (PFS) also showed significant improvement over the comparator arm. Ipsen also announced that the safety profile of Onivyde in the NAPOLI 3 trial was consistent with those observed in the previous phase I/II mPDAC study.
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In January 2023, Ipsen presented clinical trial results at the 2023 American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) Gastrointestinal Cancers Symposium.
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In June 2023, Ipsen announced that the U.S. Food and Drug Administration (FDA) had accepted its supplemental new drug application (sNDA) Onivyde (irinotecan liposome injection) plus 5 fluorouracil/leucovorin and oxaliplatin (NALIRIFOX regimen) as a potential first-line treatment for metastatic pancreatic ductal adenocarcinoma (mPDAC) and that the FDA had provided a Prescription Drug User Fee Act goal date of 13 February 2024 for review of the application.
Small Cell Lung Cancer
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In August 2022, Ipsen announced that the Phase III RESILIENT trial did not meet its primary endpoint of overall survival compared to topotecan. The trial is evaluating Onivyde versus topotecan in patients with small cell lung cancer, who have progressed on or after platinum-based first-line therapy treatment. In the announcement, Ipsen indicated that detailed results from the RESILIENT trial would be presented at an upcoming medical conference. The analysis concluded that the primary endpoint overall survival was not met in patients treated with Onivyde versus topotecan. However, a doubling of the secondary endpoint of objective response rate in favor of Onivyde was observed. In the August 2022 announcement, Ipsen reported that the clinical study results would be communicated with the regulatory agency. Ipsen indicated that while the results from the analysis of the RESILIENT trial have not demonstrated an overall survival benefit with Onivyde in patients in second-line small cell lung cancer, Ipsen intends to analyze the data further before decisions regarding next steps are made.
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To date, there have been no further announcements by Ipsen regarding these matters and it remains unclear as to whether Ipsen will continue to seek approval for the use of Onivyde in the small cell lung cancer application. If Ipsen elects not to proceed with seeking regulatory approval, or if regulatory approval is not obtained, Merrimack would not be entitled to the $150 million milestone payment tied to FDA approval of Onivyde for treatment of small cell lung cancer.
Elevation Oncology
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In January 2023, Elevation announced it is pausing further investment in the clinical development of seribantumab and intends to pursue further development only in collaboration with a partner. If Elevation elects not to proceed with seeking regulatory approval, or if regulatory approval is not obtained, Merrimack would not be entitled to the $54.5 million in additional potential development, regulatory approval and commercial-based milestone payments.