ArticleCancer2025
First-in-human phase 1 study of KHK2455 monotherapy and in combination with mogamulizumab in patients with advanced solid tumors.
Article in Cancer, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02867007 (Multicenter, Open-label, Phase 1, Dose-escalation, Cohort-expansion, First-in-Human Study of KHK2455 Administered as Monotherapy and in Combination With Mogamulizumab in Adult Subjects With Locally Advanced or Metastatic Solid Tumors), which is not on this map. Cited by 8 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Multicenter, Open-label, Phase 1, Dose-escalation, Cohort-expansion, First-in-Human Study of KHK2455 Administered as Monotherapy and in Combination With Mogamulizumab in Adult Subjects With Locally Advanced or Metastatic Solid Tumors
Who cites it
8 citing papers in PubMed.
- Phase 1 study of KHK2455, a long-acting, potent and selective IDO1 inhibitor, in combination with avelumab in patients with locally advanced or metastatic urothelial carcinoma.Journal for immunotherapy of cancer · 2026Article
- Phase I Evaluation of Patients with Newly Diagnosed Glioblastoma Treated with Radiation, Nivolumab, and IDO1 Enzyme Inhibitor BMS-986205.Clinical cancer research : an official journal of the American Association for Cancer Research · 2026Article
- Lipophilic Ligand Efficiency-Monitored Discovery of Potent, Achiral, and Bioavailable Apo-IDO1 Inhibitors.ACS medicinal chemistry letters · 2026Article
- A selective IDO1 inhibitor, KHK2455, improves efficacy of PD-L1 blockade by modulating both innate and adaptive immunity in a mouse melanoma model.Cancer immunology, immunotherapy : CII · 2025Article
- Interferon-gamma signaling pathway: Modulation of key genes in the progression of glioblastoma.World journal of biological chemistry · 2025Review
- Newly diagnosed glioblastoma IDHwt patients treated with radiation, nivolumab, and BMS-986205.Research square · 2025Article
- Article
- Targeting emerging amino acid dependencies and transporters in cancer therapy.Frontiers in pharmacology · 2025Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
17 authors.
Funding
Abstract
backgroundIndoleamine 2,3-dioxygenase 1 (IDO1) is a heme-containing enzyme that degrades tryptophan (Trp) to kynurenine (Kyn), which suppresses effector T cells and reduces antitumor activity. KHK2455 is a long-acting selective IDO1 inhibitor that blocks the heme component of the IDO holoenzyme. Mogamulizumab is a humanized immunoglobulin G1 monoclonal antibody targeting CCR4. KHK2455 + mogamulizumab demonstrated enhanced antitumor activity in preclinical studies, which led to a first-in-human, two-part, multicenter, open-label, phase 1, dose-escalation, cohort-expansion trial (ClinicalTrials.gov identifier NCT02867007) evaluating the safety/tolerability, pharmacokinetics, and IDO1 activity of KHK2455 alone and in combination with mogamulizumab in patients with treatment-refractory advanced solid tumors.
methodsPatients received oral KHK2455 at fixed doses of 0.3, 1, 3, 10, 30, and 100 mg once daily as run-in monotherapy for 28 days (cycle 0), and then in combination with 1 mg/kg intravenous mogamulizumab given weekly for cycle 1 and every 2 weeks from cycle 2 onward.
resultsThirty-six patients were enrolled. One patient with an initial diagnosis of lower esophageal cancer (100-mg cohort) experienced grade 3 gastrointestinal necrosis, and did not receive mogamulizumab. Overall, KHK2455 + mogamulizumab was well tolerated, with manageable adverse events at all doses. KHK2455 + mogamulizumab demonstrated dose-dependent plasma concentration increases and suppression of IDO1 activity. One patient with advanced bevacizumab-resistant glioblastoma demonstrated a durable confirmed Response Evaluation Criteria in Solid Tumors, version 1.1, partial response, and nine patients achieved a durable disease stabilization of ≥6 months. On the basis of the preliminary antitumor response, the cohort expansion was not initiated.
conclusionsKHK2455 + mogamulizumab was safe and well tolerated with manageable toxicities, and resulted in dose-dependent suppression of IDO1 activity; signals of antitumor activity were observed.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.