Evidence map›Paper›PMID 38231047›Full record

ArticleClinical cancer research : an official journal of the American Association for Cancer Research2024

Onvansertib in Combination with FOLFIRI and Bevacizumab in Second-Line Treatment of KRAS-Mutant Metastatic Colorectal Cancer: A Phase Ib Clinical Study.

Daniel H Ahn, Afsaneh Barzi, Maya Ridinger, Errin Samuëlsz, Ramanand A Subramanian, Chu-Chiao Wu, Peter J P Croucher, Tod Smeal, Fairooz F Kabbinavar, Heinz-Josef Lenz

Erratum issued Registry-linked trialAbstract readClinical Trial, Phase I
In one paragraph

Article in Clinical cancer research : an official journal of the American Association for Cancer Research, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. It is linked to trial NCT03829410 (A Phase 1b/2 Study of Onvansertib), which is not on this map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

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.

2 · The registry

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.

NCT03829410 phase1 / phase2completednot on this map

A Phase 1b/2 Study of Onvansertib (PCM-075) in Combination With FOLFIRI and Bevacizumab for Second Line Treatment of Metastatic Colorectal Cancer in Patients With a KRAS Mutation

TypeinterventionalSponsorCardiff OncologyRan2019 to 2024Enrolled68ConditionsMetastatic Colorectal Cancer, KRAS Gene MutationArmsOnvansertib, Bevacizumab, FOLFIRI
3 · Its place in the literature

Who cites it

35 citing papers in PubMed.

  1. Onvansertib in Combination With Chemotherapy and Bevacizumab in Second-Line Treatment ofJournal of clinical oncology : official journal of the American Society of Clinical Oncology · 2025
    Trial
  2. Article
  3. Review
  4. Targeting PLK1 Reduces MMP10 to Enhance Radiosensitivity in HPV- Head and Neck Cancer.Clinical cancer research : an official journal of the American Association for Cancer Research · 2026
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Review
  16. PLK1 inhibitors for the treatment of colorectal cancer.Annals of medicine and surgery (2012) · 2025
    Review
  17. Article
  18. Article
  19. Review
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors.

Daniel H Ahn *Division of Medical Oncology, Mayo Clinic, Phoenix, Arizona.ORCID 0000-0002-0161-4018
Afsaneh Barzi *Division of Medical Oncology and Therapeutics, City of Hope Comprehensive Cancer Center, Duarte, California.ORCID 0000-0002-0032-2988
Maya Ridinger *Cardiff Oncology Inc., San Diego, California.ORCID 0000-0001-5833-5573
Errin SamuëlszCardiff Oncology Inc., San Diego, California.ORCID 0000-0002-3424-7330
Ramanand A SubramanianCardiff Oncology Inc., San Diego, California.ORCID 0009-0005-2741-2675
Chu-Chiao WuCardiff Oncology Inc., San Diego, California.
Peter J P CroucherCardiff Oncology Inc., San Diego, California.ORCID 0000-0003-1437-0224
Tod SmealCardiff Oncology Inc., San Diego, California.ORCID 0009-0000-0320-7451
Fairooz F KabbinavarCardiff Oncology Inc., San Diego, California.ORCID 0009-0003-2552-4935
Heinz-Josef LenzDivision of Oncology, University of Southern California Norris Comprehensive Cancer Center, Los Angeles, California.ORCID 0000-0003-2178-9568

Funding

n/a n/a
6 · The paper itself

Abstract

purposeOnvansertib is a highly specific inhibitor of polo-like kinase 1 (PLK1), with demonstrated safety in solid tumors. We evaluated, preclinically and clinically, the potential of onvansertib in combination with chemotherapy as a therapeutic option for KRAS-mutant colorectal cancer. PATIENTS AND

methodsPreclinical activity of onvansertib was assessed (i) in vitro in KRAS wild-type and -mutant isogenic colorectal cancer cells and (ii) in vivo, in combination with irinotecan, in a KRAS-mutant xenograft model. Clinically, a phase Ib trial was conducted to investigate onvansertib at doses 12, 15, and 18 mg/m2 (days 1-5 and 14-19 of a 28-day cycle) in combination with FOLFIRI/bevacizumab (days 1 and 15) in patients with KRAS-mutant metastatic colorectal cancer who had prior oxaliplatin exposure. Safety, efficacy, and changes in circulating tumor DNA (ctDNA) were assessed.

resultsIn preclinical models, onvansertib displayed superior activity in KRAS-mutant than wild-type isogenic colorectal cancer cells and demonstrated potent antitumor activity in combination with irinotecan in vivo. Eighteen patients enrolled in the phase Ib study. Onvansertib recommended phase II dose was established at 15 mg/m2. Grade 3 and 4 adverse events (AE) represented 15% of all treatment-related AEs, with neutropenia being the most common. Partial responses were observed in 44% of patients, with a median duration of response of 9.5 months. Early ctDNA dynamics were predictive of treatment efficacy.

conclusionsOnvansertib combined with FOLIFRI/bevacizumab exhibited manageable safety and promising efficacy in second-line treatment of patients with KRAS-mutant metastatic colorectal cancer. Further exploration of this combination therapy is ongoing. See related commentary by Stebbing and Bullock, p. 2005.

Indexed as

Antineoplastic Combined Chemotherapy ProtocolsBevacizumabCamptothecinColorectal NeoplasmsFluorouracilLeucovorinMutationProto-Oncogene Proteins p21(ras)Xenograft Model Antitumor AssaysAdultAgedAnimalsCell Line, TumorFemaleHumansMaleBevacizumabCamptothecinFluorouracilLeucovorinProtein Serine-Threonine KinasesProto-Oncogene Proteins p21(ras)

Identifiers

PMID38231047
PMCPMC11094418

What OpenQuestion holds

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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.