Cited by 154PI3K/AKT/mTOR signaling in cancerAdvanced Breast Cancer TherapiesMetabolism, Diabetes, and Cancer

Phase I Safety, Pharmacokinetic, and Pharmacodynamic Study of SAR245408 (XL147), an Oral Pan-Class I PI3K Inhibitor, in Patients with Advanced Solid Tumors

Shapiro, Geoffrey I., Rodon, Jordi, Bedell, Cynthia, Kwak, Eunice L., Baselga, Jose, Braña, Irene, Pandya, Shuchi S., Scheffold, Christian +5 more·2014·Clinical Cancer Research

Published version of a preprint

Abstract

Purpose: SAR245408 is a pan-class I phosphoinositide 3-kinase (PI3K) inhibitor. This phase I study determined the maximum tolerated dose (MTD) of two dosing schedules [first 21 days of a 28-day period (21/7) and continuous once-daily dosing (CDD)], pharmacokinetic and pharmacodynamic profiles, and preliminary efficacy. Experimental Design: Patients with refractory advanced solid malignancies were treated with SAR245408 using a 3 + 3 design. Pharmacokinetic parameters were determined after single and repeated doses. Pharmacodynamic effects were evaluated in plasma, hair sheath cells, and skin and tumor biopsies. Results: Sixty-nine patients were enrolled. The MTD of both schedules was 600 mg; dose-limiting toxicities were maculopapular rash and hypersensitivity reaction. The most frequent drug-related adverse events included dermatologic toxicities, diarrhea, nausea, and decreased appetite. Plasma pharmacokinetics showed a median time to maximum concentration of 8 to 22 hours, mean terminal elimination half-life of 70 to 88 hours, and 5- to 13-fold accumulation after daily dosing (first cycle). Steady-state concentration was reached between days 15 and 21, and exposure was dose-proportional with doses up to 400 mg. SAR245408 inhibited the PI3K pathway (∼40%–80% reduction in phosphorylation of AKT, PRAS40, 4EBP1, and S6 in tumor and surrogate tissues) and, unexpectedly, also inhibited the MEK/ERK pathway. A partial response was seen in one patient with advanced non–small cell lung cancer. Eight patients were progression-free at 6 months. Pharmacodynamic and clinical activity were observed irrespective of tumor PI3K pathway molecular alterations. Conclusions: SAR245408 was tolerable at doses associated with PI3K pathway inhibition. The recommended phase II dose of the capsule formulation is 600 mg administered orally with CDD. Clin Cancer Res; 20(1); 233–45. ©2013 AACR.

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Crossref · 10.1158/1078-0432.ccr-13-1777

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  • The PI3K inhibitor XL147 inhibited the PI3K pathway with a 40-80% reduction in phosphorylation of AKT and 4EBP1 in tumours and unexpectedly inhibited the MEK/ERK pathway in a phase I trial.

    “For example, the PI3K inhibitor XL147 was reported to inhibit the PI3K pathway with a 40–80% reduction in the phosphorylation of AKT and 4EBP1 in tumours and unexpectedly inhibited the MEK/ERK pathway in a phase I trial [111].”

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Authors
Shapiro, G. I., Rodon, J., Bedell, C., Kwak, E. L., Baselga, J., Braña, I., Pandya, S. S., Scheffold, C., Laird, A. D., Nguyen, L. T., Xu, Y., Egile, C., & Edelman, G.
Affiliations
  • Beth Israel Deaconess Medical Center (US)
  • Authors' Affiliations: 1Dana-Farber Cancer Institute; 2Massachusetts General Hospital; 3Beth Israel Deaconess Medical Center, Boston, Massachusetts; 4Vall d'Hebron Institute of Oncology (VHIO), Barcelona, Spain; 5Mary Crowley Cancer Research Centers, Dallas, Texas; 6Exelixis Inc., South San Francisco, California; and 7Sanofi, Cambridge, Massachusetts, and Vitry-sur-Seine, France
Venue
Clinical Cancer Research
Published
2014-01-01
Volume
20
Issue
1
Pages
233-245
ISSN
  • 1078-0432 (ISSN-L)
  • 1557-3265
OpenAlex
W1979937839
Cited by
152
References
28
Citations by year
2025: 1 · 2024: 8 · 2023: 5 · 2022: 6 · 2021: 9 · 2020: 10 · 2019: 7 · 2018: 9 · 2017: 24 · 2016: 21 · 2015: 28 · 2014: 24
FWCI
10.89
Type
journal article
Language
en
Open access
closed
Locations
  • Clinical Cancer Research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Advanced Breast Cancer Therapies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
Keywords
phosphatidylinositol 3-kinase, maximum tolerated dose, dose-limiting toxicity, maculopapular rash, pharmacokinetics, pharmacodynamics, Akt phosphorylation, advanced solid tumors, non-small cell lung cancer, dose proportionality, tumor biopsy
MeSH terms
Phosphoinositide-3 Kinase Inhibitors, Administration, Oral, Adult, Aged, Aged, 80 and over, Antineoplastic Agents, Carcinoma, Non-Small-Cell Lung, Dose-Response Relationship, Drug, Female, Humans, Lung Neoplasms, Male, Middle Aged, Neoplasm Staging, Quinoxalines, Skin Diseases, Sulfonamides, Signal Transduction, Treatment Outcome, Area Under Curve, Maximum Tolerated Dose, Phosphatidylinositol 3-Kinase

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