The PTPN2/PTPN1 inhibitor ABBV-CLS-484 unleashes potent anti-tumour immunity.
Christina K Baumgartner, Hakimeh Ebrahimi-Nik, Arvin Iracheta-Vellve...
https://pubmed.ncbi.nlm.nih.gov/37794185/Actively Recruiting
Led by Calico Life Sciences LLC · Updated on 2026-06-04
248
Participants Needed
30
Research Sites
N/A
Total Duration
Researchers are evaluating ABBV-CLS-484, a drug being studied alone and in combination with other cancer therapies, for people with advanced solid tumors. This phase 1 trial aims to find a safe and effective dose of ABBV-CLS-484 as a single treatment and combined with a PD-1 targeting agent or a VEGFR tyrosine kinase inhibitor. The study includes patients with locally advanced or metastatic tumors, including head and neck squamous cell carcinoma, non-small cell lung cancer, and clear cell renal cell carcinoma. The trial has three parts. In Part 1, ABBV-CLS-484 is given alone in increasing doses to patients with advanced solid tumors. Part 2 tests escalating doses of ABBV-CLS-484 combined with either a PD-1 inhibitor or a VEGFR tyrosine kinase inhibitor in similar patients. Part 3 involves giving ABBV-CLS-484 at the recommended dose alone or with these agents to patients with specific advanced cancers. Treatments are given as oral capsules for ABBV-CLS-484 and VEGFR TKI, and intravenous infusion for the PD-1 inhibitor. Participants will undergo various assessments, including measuring drug levels in the blood, monitoring for side effects, and evaluating tumor response using established criteria. The study follows patients from baseline through approximately 42 to 64 days for dose escalation and up to about three years for longer-term response. The research team will carefully observe safety, drug behavior, and how the tumors respond to the treatments during the study period.
CONDITIONS
Study With ABBV-CLS-484 in Participants With Locally Advanced or Metastatic Tumors
N
Nicole Director Clinical Operations
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Calico Life Sciences LLC
Lead Sponsor
This table compares participation in this trial with other options available for this condition. The information is drawn from published research and the trial’s study details and is provided for educational purposes only.
| Factors | Investigational ABBV‑CLS‑484 regimen | Current PD‑1‑based standard immunotherapy |
|---|---|---|
| What it is | An oral PTPN2/PTPN1 inhibitor studied alone or combined with a PD‑1 inhibitor or a VEGFR TKI in a Phase 1 dose escalation and expansion study | PD‑1 inhibitors represent current immunotherapy standard for relapsed/refractory HNSCC, NSCLC, ccRCC and MSI‑high tumors |
| Role in trial | Investigational treatment tested across dose levels and combinations to define safety, pharmacokinetics and recommended dose | Serves as the benchmark immunotherapy used in these cancers although not tested in this trial |
| Primary use | Aims to establish safety, tolerability, pharmacokinetics, recommended Phase 2 dose and preliminary efficacy responses | Used to achieve disease control and overall survival benefit in these tumor types as standard immunotherapy |
| How it is given | Oral capsule of ABBV‑CLS‑484 given alone or combined with IV PD‑1 inhibitor or oral VEGFR TKI, across dose escalation and expansion phases | Administered via intravenous infusion as monotherapy or in standard combination regimens |
| Evidence status | Early human safety and PK data being collected; response data preliminary and not mature yet | Establish efficacy in these cancers based on prior trials and guideline recommendations |
| Important risks | Safety profile still under investigation; specific adverse effects not yet established | Known to carry immune‑related adverse events such as pneumonitis, colitis, and endocrinopathies |
| Important limitations | Small non‑randomized early‑phase study without comparative efficacy or safety against standard care | Efficacy may be limited in patients who have already progressed on prior PD‑1/PD‑L1 therapy |
Disclaimer: This comparison is created with the help of artificial intelligence(AI) and may contain errors or missing information. It is not medical advice and does not mean one option is better or safer than another. Clinical trials are still being studied, and joining a trial is your choice. Please consult your healthcare professional before making any decisions.
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Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Duration - Up to approximately 42 to 64 days depending on treatment arm
Participants receive ABBV-CLS-484 alone or in combination with PD-1 Inhibitor or VEGFR Tyrosine Kinase Inhibitor as oral capsules, tablets, or IV infusion to treat locally advanced or metastatic tumors.
Multiple visits for dosing and assessments during treatment period
Duration - Up to approximately 3 years
Participants are monitored for response and safety after treatment completion for up to approximately 3 years.
Periodic follow-up visits
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
NON_RANDOMIZED
Model
SEQUENTIAL
Primary Purpose
TREATMENT
Number of Arms
6
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Christina K Baumgartner, Hakimeh Ebrahimi-Nik, Arvin Iracheta-Vellve...
https://pubmed.ncbi.nlm.nih.gov/37794185/Calico Life Sciences LLC
Lead Sponsor