Either you have JavaScript disabled or your browser does not support Javascript . To work properly, this page requires JavaScript to be enabled.
How to enable JavaScript in your browser?

ONA 255

Next Previous
Drug Profile

ONA 255

Alternative Names: ONA-255

Latest Information Update: 10 Jun 2026

Price :
$50 *
Note:
  • Adis is an information provider. We do not sell or distribute actual drugs.
  • Final gross price and currency may vary according to local VAT and billing address.
  • Your purchase entitles you to full access to the information contained in our drug profile at the time of purchase.
  • A link to download a PDF version of the drug profile will be included in your email receipt.

At a glance

  • Originator Ona Therapeutics
  • Class Antibodies; Antineoplastics; Drug conjugates; Immunoconjugates
  • Mechanism of Action Undefined mechanism
  • Orphan Drug Status

    Orphan designation is assigned by a regulatory body to encourage companies to develop drugs for rare diseases.

    No
  • New Molecular Entity Yes

Highest Development Phases

  • Phase I/II Solid tumours
  • Clinical Phase Unknown Breast cancer

Most Recent Events

  • 04 Jun 2026 Clinical trials in Breast cancer (unspecified route)
  • 12 Dec 2025 Phase-I/II clinical trials in Solid tumours (Late-stage disease, Metastatic disease, Second-line therapy or greater) in Spain (IV) (CTIS2025-522233-62-00)
  • 14 Oct 2025 Ona Therapeutics plans a clinical trial for ONA 255 for Breast cancer in early 2026 (Parenteral)

You need to be a logged in or subscribed to view this content

Request demo (opens in a new window)
If your organization or you do not have a subscription, try one of the following: If your organization has a subscription, there are several access options, even while working remotely:
  • Working within your organization’s network
  • with username/password or try to via your institution
  • Persisted access using your organization’s identifier stored in your user browser for 90 days
Back to top