Perspective Therapeutics Inc.

08/11/2023 | Press release | Archived content

Perspective Therapeutics Announces First Patient Dosed in Phase 1/2a Dose Escalation Trial of VMT01 of its Targeted Alpha-Particle Therapy (TAT), for Treatment of MC1R-positive[...]

  • First patient with MC1R-positive metastatic melanoma treated with 212Pb-VMT01
  • Preliminary data readout from dose escalation study expected Q4 2023

RICHLAND, WASHINGTON & CORALVILLE, IOWA - August 11, 2023 - Perspective Therapeutics, Inc. ("Perspective" or "the Company") (NYSE AMERICAN: CATX), announces the first patient was dosed at the University of Wisconsin in the Company's Phase 1/2a dose escalation trial evaluating the safety and efficacy of 212Pb-VMT01 in patients with MC1R+ metastatic melanoma. The trial is a first-in-human, non-randomized, multi-center open-label dose escalation, dose expansion study of 212Pb-VMT01 in patients with histologically confirmed melanoma and a positive MC1R imaging scan.

"MC1R is implicated in the development of melanoma making it a promising target for potential treatment using radionuclide therapy," said Thijs Spoor, Chief Executive Officer at Perspective Therapeutics. "Today we achieved an important milestone as we work to access the potential of VMT01 as a targeted alpha-particle therapy for MC1R+ metastatic melanoma."

"We are excited to work with Perspective and announce that the first patient with metastatic melanoma has been dosed in the first-in-human study of 212Pb-VMT01," said Zachary S. Morris, M.D., Ph.D., Vice Chair and Endowed Professor of Human Oncology, Program Director for the University of Wisconsin Bentson Research Fellowship, and Principal Investigator for the VMT01 clinical study. "With Perspective's targeted radionuclide therapy, 212Pb-VMT01, we have the advantage of treating all disease sites following intravenous injection."

VMT01 has recently completed clinical imaging studies at Mayo Clinic, Rochester. Results were presented at the Society of Nuclear Medicine and Molecular Imaging (SNMMI) Annual Meeting in Chicago. In addition, published preclinical data demonstrated durable complete responses in treatment-resistant models when combined with existing immunotherapy drugs used to treat melanoma.

"With the successful conclusion of our imaging study, we are excited to proceed with Perspective's first-in-human dosing of 212Pb-VMT01," said Markus Puhlmann, Chief Medical Officer of Perspective Therapeutics. "As we advance through development milestones, our goal is to demonstrate 212Pb-VMT01 can deliver systemic, precision, cytotoxic alpha particle radiation in order to selectively kill cancer cells. We look forward to presenting preliminary data from the study later in the year."

The Phase 1/2a study consists of a dose-escalation part designed to determine the Maximum Tolerated Dose (MTD) or Maximum Feasible Dose (MFD) following a single administration of 212Pb-VMT01 followed by a dose expansion based on the identified MTD/MFD for the selection of dose(s) for further clinical development. Patients may be eligible to receive up to 3 administrations of 212Pb-VMT01 approximately 8 weeks apart. A dosimetry sub-study utilizing the SPECT imaging surrogate, 203Pb-VMT01, has been added to assess normal organ biodistribution, tumor uptake, radiation dosimetry, and correlation of uptake with observed toxicities and efficacy.

Clinical trial sites include Yale University, University of Iowa, Mayo Clinic in Rochester, Saint Louis University, Washington University, and University of Wisconsin.

212Pb was supplied using Perspective's proprietary VMT-α-GEN 212Pb benchtop generator and final manufacturing was performed at Perspective's GMP facility in Coralville, IA. Additional CDMO manufacturing sites are expected to be brought online in the coming months to enable broader coverage for sites across the US.

About Perspective Therapeutics, Inc.

Perspective Therapeutics, Inc., is a medical technology and radiopharmaceutical company that is pioneering advanced treatment applications for cancers throughout the body. The Company is the sole producer of Cesium-131 brachytherapy seeds and has a proprietary technology that utilizes the isotope Lead-212 to deliver powerful alpha radiation specifically to cancer cells via specialized targeting peptides. The Company is also developing complementary imaging diagnostics that incorporate the same targeting peptides which provide the opportunity to personalize treatment and optimize patient outcomes. This "theranostic" approach enables the ability to see the specific tumor and then treat it to potentially improve efficacy and minimize toxicity associated with many other types of cancer treatments.

The Company's melanoma (VMT-01) and neuroendocrine tumor (VMT-α-NET) programs are entering Phase 1/2a imaging and therapy trials for the treatment of metastatic melanoma and neuroendocrine tumors at several leading academic institutions. The Company has also developed a proprietary lead-212 generator to secure isotope supply for clinical trial and commercial operations.

For more information, please visit the Company's website at

Safe Harbor Statement

This press release contains forward-looking statements within the meaning of the United States Private Securities Litigation Reform Act of 1995. Statements in this press release that are not statements of historical fact are forward-looking statements. Words such as "may," "will," "should," "expect," "plan," "anticipate," "could," "intend," "target," "project," "estimate," "believe," "predict," "potential" or "continue" or the negative of these terms or other similar expressions are intended to identify forward-looking statements, though not all forward-looking statements contain these identifying words. Forward-looking statements in this press release include statements concerning, among other things, the Company's clinical development plans and the expected timing thereof; the expected timing for availability and release of data; the Company's timing and expectations regarding regulatory communications, submissions and approvals; expectations regarding the potential market opportunities for the Company's product candidates; the potential functionality, capabilities, and benefits of the Company's product candidates; the potential size of the commercial market for the Company's product candidates; the Company's expectations, beliefs, intentions, and strategies regarding the future; the Company's expectations regarding the addition of manufacturing sites; the Company's expectations regarding enabling broader coverage for clinical trial sites; the Company's intentions to improve important aspects of care in cancer treatment; and other statements that are not historical fact.

The Company may not actually achieve the plans, intentions or expectations disclosed in the forward-looking statements and you should not place undue reliance on the forward-looking statements. These forward-looking statements involve risks and uncertainties that could cause the Company's actual results to differ materially from the results described in or implied by the forward-looking statements, including, without limitation, the potential that regulatory authorities may not grant or may delay approval for the Company's product candidates; uncertainties and delays relating to the design, enrollment, completion, and results of clinical trials; unanticipated costs and expenses; early clinical trials may not be indicative of the results in later clinical trials; clinical trial results may not support regulatory approval or further development in a specified indication or at all; actions or advice of regulatory authorities may affect the design, initiation, timing, continuation and/or progress of clinical trials or result in the need for additional clinical trials; the Company's ability to obtain and maintain regulatory approval for the Company's product candidates; delays, interruptions or failures in the manufacture and supply of the Company's product candidates; the size and growth potential of the markets for the Company's product candidates, and the Company's ability to service those markets; the Company's cash and cash equivalents may not be sufficient to support its operating plan for as long as anticipated; the Company's expectations, projections and estimates regarding expenses, future revenue, capital requirements, and the availability of and the need for additional financing; the Company's ability to obtain additional funding to support its clinical development programs; the availability or potential availability of alternative products or treatments for conditions targeted by the Company that could affect the availability or commercial potential of its product candidates; the ability of the Company to manage growth and successfully integrate its businesses; whether the Company can maintain its key employees; whether there is sufficient training and use of the Company's products and product candidates; the market acceptance and recognition of the Company's products and product candidates; the Company's ability to maintain and enforce its intellectual property rights; whether the Company can maintain its therapeutic isotope supply agreement with the Department of Energy; whether the Company will continue to comply with the procedures and regulatory requirements mandated by the FDA for additional trials, Phase 1 and 2 approvals, Fast Track approvals, and 510(k) approval and reimbursement codes; and any changes in applicable laws and regulations. Other factors that may cause the Company's actual results to differ materially from those expressed or implied in the forward-looking statements in this press release are described under the heading "Risk Factors" in the Company's most recent Transition Report on Form 10-KT and the Company's most recent Quarterly Report on Form 10-Q, each filed with the Securities and Exchange Commission (the "SEC"), in the Company's other filings with the SEC, and in the Company's future reports to be filed with the SEC and available at

Forward-looking statements contained in this press release are made as of this date, and the Company undertakes no duty to update such information whether as a result of new information, future events or otherwise, except as required under applicable law.

Investor Relations Contact:

LifeSci Advisors
Chuck Padala
E: [email protected]


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