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Pasithea Therapeutics to Present Updated Data from Ongoing Phase 1 Trial of PAS-004 in Advanced Cancer Patients at the 2025 ASCO Annual Meeting

Key Takeaway: Pasithea Therapeutics Corp. has announced the acceptance of an abstract for a presentation at the 2025 ASCO Annual Meeting, where they will provide updated interim data from their ongoing Phase 1 trial of PAS-004. The trial focuses on patients with MAPK pathway driven advanced solid tumors. Interim results highlight the clinical activity, safety profile, and pharmacokinetic properties of PAS-004, suggesting its potential as a treatment option for neurofibromatosis type 1 and other malignancies. The presentation will occur on June 2, 2025, during the developmental therapeutics session.
Price reaction · baseline $1.63 (2025-04-23 close) · hit after-hours · 1 other KTTA headline(s) in the window, move may be shared
day 0 close
+5.5%
day 1 · peak
+6.1%
day 3
+0.6%

Market Sentiment Analysis

POSITIVE FACTORS

  • Updated interim clinical data demonstrated clinical activity.
  • PAS-004 showed target engagement and a favorable safety profile.
  • The treatment may be ideal for NF1-related neurofibromas and various cancers.

BiopharmaWatch Analysis

From our catalyst data and publicly available data · not financial advice
Best trade, last catalyst
+117%
120-day peak, hindsight
Typical move
3.2%
average across 3 past catalysts
Cash runway
~29 mo
Minimal dilution risk
Lead asset
PAS-004
Phase 1 · RAS Mutation

Full Press Release Details

MIAMI, April 24, 2025 (GLOBE NEWSWIRE) -- Pasithea Therapeutics Corp. (NASDAQ: KTTA) (“Pasithea” or the “Company”), a clinical-stage biotechnology company developing PAS-004, a next-generation macrocyclic MEK inhibitor, for the treatment of neurofibromatosis type 1 (NF1) and other MAPK pathway driven indications, today announced the acceptance of an abstract for a poster prenstation at the Annual Meeting of the American Society for Clinical Oncology (ASCO) taking place May 30 – June 3, 2025, in Chicago, Illinois.
The Company will present updated interim clinical data from its onging Phase 1 clinical trial of PAS-004 in patients with MAPK pathway driven advanced solid tumors.
“We are pleased to present interim clinical data of PAS-004 through cohort 4A and 4B, that to date has demonstrated clinical activity, target engagement, and a favorable safety profile,” said Dr. Tiago Reis Marques, Chief Executive Officer of Pasithea. “We believe PAS-004’s emerging profile may achieve the sweet spot between PK, PD and tolerability and may make PAS-004 an ideal candidate for the treatment of NF1 related cutaneous and plexiform neurofibromas as well as a potential candidate for treatment of various cancers and MAPK pathway driven diseases.”
Presentation and poster details
Title: Phase 1 dose-escalation study of the safety and pharmacokinetics of PAS-004, a macrocyclic MEK inhibitor, for the treatment of patients with MAPK pathway–driven advanced solid tumors
Session: Poster Session – Developmental Therapeutics – Molecularly Targeted Agents and Tumor Biology
Date and Time: 6/2/2025, 1:30 – 4:30 PM CDT
The full abstract will be available on the ASCO® website on May 22, 2025, at 5:00 p.m. ET.
The ongoing Phase 1 clinical trial is a multi-center, open-label, dose escalation 3+3 study design to evaluate the safety, tolerability, pharmacokinetic (PK), pharmacodynamic (PD), and preliminary efficacy of PAS-004 in patients with MAPK pathway driven advanced solid tumors with a documented RAS, NF1 or RAF mutation or patients who have failed BRAF/MEK inhibition (NCT06299839).
About Pasithea Therapeutics Corp.
Pasithea is a clinical-stage biotechnology company focused on the discovery, research and development of innovative treatments for central nervous system (CNS) disorders, RASopathies and MAPK pathway driven diseases.
Forward-Looking Statements
This press release contains statements that constitute “forward-looking statements” made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These forward-looking statements include statements regarding the Company’s ongoing Phase 1 clinical trial of PAS-004 in advanced cancer patients, the Company’s planned Phase 1/1b clinical trial of PAS-004 in adult NF1 patients, and the safety, tolerability, pharmacokinetic (PK), pharmacodynamics (PD) and preliminary efficacy of PAS-004, as well as all other statements, other than statements of historical fact, regarding the Company’s current views and assumptions with respect to future events regarding its business, as well as other statements with respect to the Company’s plans, assumptions, expectations, beliefs and objectives, the success of the Company’s current and future business strategies, product development, pre-clinical studies, clinical studies, clinical and regulatory timelines, market opportunity, competitive position, business strategies, potential growth opportunities and other statements that are predictive in nature. Forward-looking statements are subject to numerous conditions, many of which are beyond the control of the Company. While the Company believes these forward-looking statements are reasonable, undue reliance should not be placed on any such forward-looking statements, which are based on information available to the Company on the date of this release. These forward-looking statements are based upon current estimates and assumptions and are subject to various risks and uncertainties, including risks that future clinical trial results may not match results observed to date, may be negative or ambiguous, or may not reach the level of statistical significance required for regulatory approval, as well as other factors set forth in the Company’s most recent Annual Report on Form 10-K, Quarterly Report on Form 10-Q and other filings made with the U.S. Securities and Exchange Commission (SEC). Thus, actual results could be materially different. The Company undertakes no obligation to update these statements whether as a result of new information, future events or otherwise, after the date of this release, except as required by law.
Pasithea Therapeutics Contact

Frequently Asked Questions

What is PAS-004 developed for?

PAS-004 is a MEK inhibitor aimed at treating neurofibromatosis type 1 and other MAPK pathway driven conditions.

When will Pasithea present interim data on PAS-004?

Interim data from the PAS-004 trial will be presented on June 2, 2025, at ASCO.

How is the clinical trial for PAS-004 structured?

The trial is a multi-center, open-label dose escalation study evaluating safety, tolerability, and efficacy.

What is the focus of Pasithea Therapeutics?

Pasithea focuses on discovering and developing treatments for CNS disorders and MAPK pathway diseases.

What must patients have to participate in the PAS-004 trial?

Participants should have advanced solid tumors with specific mutations or failed prior BRAF/MEK treatments.

Last updated: Apr 24, 2025