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Closed (no longer recruiting)Last updated: 20 February 2024

This phase I/II trial will begin to understand how safe and tolerable a new cancer drug (D-1553) is as a monotherapy and combination treatment for people with advanced solid cancers that have a KRasG12C mutationA Phase 1/2, Open Label Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Efficacy of D-1553 in Subjects With Advanced or Metastatic Solid Tumors With KRasG12C Mutation

Clinical summary


This trial will be conducted in three parts.

The first part (does escalation, Phase Ia) will evaluate up to 7 sequential cohorts with different doses of D-1553 to determine safety, tolerability, maximum tolerated dose (MTD) and recommended dose for expansion (RDE).

The next part (Phase Ib) will determine the MTD of D-1553 in combination with standard treatment for patients with advanced or metastatic NSCLC, CRC and other solid tumours.

The final part (Phase II) will evaluate the efficacy of D- 1553 as single agent and as a combination treatment in patients with advanced or metastatic solid tumours that have a KRas G12C mutation. Enrolment into Phase II will be opened after confirmation of the RDE.


This trial is treating patients with advanced solid cancers with KRasG12C mutation, including non-small cell lung cancer and colorectal (bowel) cancer


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Trial Identifiers

Use the hyperlinks, where available to access additional clinical trial information.

Trial sponsor

InventisBio Inc.

Scientific Title

A Phase 1/2, Open Label Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Efficacy of D-1553 in Subjects With Advanced or Metastatic Solid Tumors With KRasG12C Mutation



  • Subject with histologically proven, locally advanced, unresectable and/or metastatic solid tumor, for which no standard treatment is available or the subject is refractory to or intolerant of existing standard treatment.
  • Subject has KRasG12C mutation in tumor tissue or other biospecimens containing cancer cells or DNA. Historical, local laboratory result (up to 5 years prior to this study) can be used for Phase 1 subjects. Phase 2 subjects must be tested for KRasG12C mutation by a central laboratory.
  • Subject has tumor type requirement as follows: advanced or metastatic solid tumors including NSCLC and CRC.
  • Subject has measurable disease according to RECIST, v1.1.


  • Subject with unstable or progressive central nervous system (CNS) metastases.
  • Subject with acute myocardial infarction, severe/unstable angina; or with cardiac insufficiency of New York Heart Association Functional Classification Grade 2 or above.
  • Subject has corrected QT interval using Fridericia's formula (QTcF) prolongation at rest, where the mean QTc interval is > 480 msec based on triplicate measurements of electrocardiogram (ECG).
  • Subject with stroke or other severe cerebrovascular diseases within 12 months before enrollment;
  • Subject with interstitial lung disease or acute lung infection not yet recovered including but not limited to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection;
  • Subject has any history or evidence of substance abuse or medical, psychological or social conditions that may, in the opinion of the investigator, interfere with participation in the study or evaluation of the study results.
  • Subject has impaired gastrointestinal (GI) function or GI diseases that may significantly alter the absorption or metabolism of oral medications.
  • Subject has unresolved toxicities from prior anticancer therapy, defined as toxicities (other than alopecia) not yet resolved to NCI CTCAE, v5.0, Grade ≤ 1 (Grade ≤ 2 for peripheral neuropathy).
  • Subject had major surgery within 4 weeks prior to study intervention administration or last dose of palliative radiation therapy within 2 weeks prior to study intervention administration.
  • Subject is pregnant or lactating.


  • You are able to swallow medication by mouth.
  • You have been diagnosed with cancer, but have not received any treatment.
  • You have had treatment but your cancer has gotten worse or has not responded to the treatment you have been given.
  • Your cancer has not spread to other parts of the body.
  • Your cancer has spread to other parts of the body.


  • You have certain types of non-cancer medical conditions.
  • You have had certain treatments, surgical procedures or drugs.

Clinical trials have complex eligibility criteria.

Ask your doctor if this trial could be right for you.

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