On August 9, 2022 Fusion Pharmaceuticals Inc. (Nasdaq: FUSN), a clinical-stage oncology company focused on developing next-generation radiopharmaceuticals as precision medicines, reported financial results for the second quarter ended June 30, 2022 and provided an update on clinical and corporate developments (Press release, Fusion Pharmaceuticals, AUG 9, 2022, View Source [SID1234617877]).
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Chief Executive Officer John Valliant, Ph.D. commented, "We are pleased with the recent FDA clearance of our FPI-2059 investigational new drug (IND) application and the initiation of the Phase 1 clinical study demonstrating our ability to progress into the clinic targeted alpha therapies based on various targeting molecules. The FPI-2059 small molecule targeting NTSR1 has the potential to address several solid tumor indications, including neuroendocrine differentiated prostate, colorectal and pancreatic cancers, for which there is substantial unmet clinical need. Further, we are encouraged by the imaging data we presented at the SNMMI 2022 Annual Meeting that showed pre-administration of cold antibody with FPI-1434 increased tumor binding with a good safety profile."
Dr. Valliant continued, "With three clinical programs and our multi-program partnership with AstraZeneca, we are committed to building a fully integrated radiopharmaceutical organization, marked most recently by our actinium-225 collaboration and supply agreement with Niowave. The agreement provides access to a pre-determined percentage of Niowave’s capacity, access to any excess supply, and the option to invest in future production facilities. This agreement, together with our collaborations with TRIUMF and the Department of Energy, extend our leadership position in actinium supply and meet the needs of our growing pipeline."
Portfolio Update
FPI-1434
In the Phase 1 study, Fusion is exploring various dose levels of FPI-1434 as well as two dosing regimens: one with FPI-1434 alone, and another in which a small dose of cold antibody (naked IGF-1R antibody without the isotope) is administered prior to each dose of FPI-1434. The Company anticipates reporting Phase 1 safety, pharmacokinetics, and imaging data, including any evidence of anti-tumor activity, and details on the dosing regimen, in the first half of 2023. Fusion continues to anticipate the initiation of a Phase 1 combination study with FPI-1434 and KEYTRUDA (pembrolizumab) to occur six to nine months following determination of the recommended Phase 2 dose of FPI-1434 monotherapy.
FPI-1966
The Phase 1, non-randomized, open-label clinical trial of FPI-1966 in patients with solid tumors expressing FGFR3, intended to investigate safety, tolerability and pharmacokinetics and to establish the recommended Phase 2 dose, has been initiated. Fusion expects to dose the first patient in the second half of 2022 and plans to provide updated guidance for preliminary pharmacokinetic, imaging and safety data from the first patient cohort following initial experience with patient screening in order to better predict the cadence of patient enrollment.
FPI-2059
FPI-2059 is a small molecule radioconjugate in development as a targeted alpha therapy for various solid tumors, including neuroendocrine differentiated (NED) prostate, colorectal, and pancreatic cancers. The molecule targets neurotensin receptor 1 (NTSR1), a promising target for cancer treatment, which is overexpressed in several solid tumors. FPI-2059 is based upon Ipsen’s IPN-1087 (previously studied in a Phase 1 clinical trial as a beta-emitting radiopharmaceutical), which Fusion acquired in 2021, and converted to an alpha-emitting radiopharmaceutical using actinium-225.
The U.S. Food and Drug Administration (FDA) cleared Fusion’s IND application for FPI-2059 in June 2022 and study initiation activities are ongoing in a Phase 1, non-randomized, open-label clinical trial in patients with solid tumors expressing NTSR1, intended to investigate safety, tolerability and pharmacokinetics and to establish the recommended Phase 2 dose. Fusion plans to provide guidance on timelines for the FPI-2059 program following site activations and initial experience with patient screening and patient enrollment.
Recent Updates
In June, Fusion presented imaging data from the cold antibody sub-study in the Phase 1 study of FPI-1434 at the Society of Nuclear Medicine and Molecular Imaging (SNMMI) 2022 Annual Meeting. Imaging data from the study demonstrate a favorable gain in [111In]-FPI-1547, the investigational imaging agent, tumor lesion uptake versus normal tissue when FPI-1175, the naked antibody without the isotope, was pre-administered and compared to dosing with FPI-1547 alone. Importantly, sites of improved tumor lesion uptake were independent of anatomic location of disease and included bone, lung, liver, and lymph nodes. Administration of FPI-1547 with and without pre-administration of FPI-1175 was safe without any drug-related Serious Adverse Events or Dose Limiting Toxicities.
In June, Fusion and Niowave, Inc. announced an agreement for the development, production, and supply of actinium-225. Fusion will invest up to $5 million in Niowave to further develop their technology to increase current production capacity of actinium-225, and in return Fusion will have guaranteed access to a pre-determined percentage of Niowave’s capacity of the resulting actinium-225, as well as preferred access to any excess supply produced. As part of the agreement, Fusion will also have an option to invest in future production of actinium-225 to scale with Fusion’s needs.
Second Quarter 2022 Financial Results
Cash and Investments: As of June 30, 2022, Fusion held cash, cash equivalents and investments of $198.4 million, compared to cash, cash equivalents and investments of $220.8 million as of December 31, 2021. Fusion expects its existing cash, cash equivalents and investments as of June 30, 2022, will be sufficient to fund operations into the first quarter of 2024.
Collaboration Revenue: For the second quarter of 2022, Fusion recorded $0.6 million of revenue under the AstraZeneca collaboration agreement.
R&D Expenses: Research and development expenses for the second quarter of 2022 were $12.1 million, compared to $21.1 million for the same period in 2021. The decrease was primarily due to a decrease in platform development and unallocated research and development costs driven by discrete items that occurred during the second quarter of 2021, including common share issuances pursuant to our asset purchase agreements with Ipsen and Rainier Therapeutics, and payments made under our agreement with CPDC for services relating to the validation of Fusion’s manufacturing facility currently under construction which resulted in the recognition of research and development expense during that quarter.
G&A Expenses: General and administrative expenses for the second quarter of 2022 were $7.8 million, compared to $6.6 million for the same period in 2021. The increase was primarily due to an increase in personnel-related costs, corporate costs and professional fees.
Net Loss: For the second quarter of 2022, Fusion reported a net loss of $19.1 million, or $0.44 per share, compared with a net loss of $26.9 million, or $0.63 per share, for the same period in 2021.
Impact of COVID-19
Fusion is experiencing material delays in patient recruitment, enrollment and study site initiations as a result of continued resourcing issues related to COVID-19 at trial sites.
There also remains uncertainty relating to the trajectory of the pandemic, hospital staffing and resource issues, and whether they may cause further delays in patient study recruitment. The impact of related responses and disruptions caused by the COVID-19 pandemic may result in further difficulties or delays in initiating, enrolling, conducting or completing the planned and ongoing trials and the incurrence of unforeseen costs as a result of disruptions in clinical supply or preclinical study or clinical trial delays. The continued impact of COVID-19 on results will largely depend on future developments, which are highly uncertain and cannot be predicted with confidence.