Clinical Trials

Multiple clinical trials spanning Phase I and Phase II have evaluated samotolisib monotherapy and combination regimens in healthy volunteers, advanced solid tumors, metastatic breast cancer, non-small cell lung cancer, and pediatric malignancies like osteosarcoma and Ewing sarcoma. Sponsored by industry, government, and academic entities—including Eli Lilly and Company, the National Cancer Institute, and Dana-Farber Cancer Institute—these studies encompass completed, active not recruiting, and terminated recruitment statuses. Collectively, these investigations demonstrate extensive evaluation of samotolisib's pharmacokinetic profile and therapeutic efficacy across diverse adult and pediatric cancers.

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT03675893 RECRUITING
Endometrial Cancer
Dana-Farber Cancer Institute
2018-12-24 PHASE2
NCT03155620 ACTIVE_NOT_RECRUITING
Advanced Malignant Solid Neoplasm; Ann Arbor Stage III Non-Hodgkin Lymphoma; Ann Arbor Stage IV Non-Hodgkin Lymphoma; Histiocytic Sarcoma; Juvenile Xanthogranuloma; Langerhans Cell Histiocytosis; Malignant Glioma; Recurrent Childhood Rhabdomyosarcoma; Recurrent Ependymoma; Recurrent Ewing Sarcoma; Recurrent Glioma; Recurrent Hepatoblastoma; Recurrent Langerhans Cell Histiocytosis; Recurrent Malignant Germ Cell Tumor; Recurrent Malignant Solid Neoplasm; Recurrent Medulloblastoma; Recurrent Neuroblastoma; Recurrent Non-Hodgkin Lymphoma; Recurrent Osteosarcoma; Recurrent Peripheral Primitive Neuroectodermal Tumor; Recurrent Primary Central Nervous System Neoplasm; Recurrent Rhabdoid Tumor; Recurrent Soft Tissue Sarcoma; Refractory Ewing Sarcoma; Refractory Glioma; Refractory Hepatoblastoma; Refractory Langerhans Cell Histiocytosis; Refractory Malignant Germ Cell Tumor; Refractory Malignant Solid Neoplasm; Refractory Medulloblastoma; Refractory Neuroblastoma; Refractory Non-Hodgkin Lymphoma; Refractory Osteosarcoma; Refractory Peripheral Primitive Neuroectodermal Tumor; Refractory Primary Central Nervous System Neoplasm; Refractory Rhabdoid Tumor; Refractory Rhabdomyosarcoma; Rhabdoid Tumor; Stage III Osteosarcoma AJCC v7; Stage III Soft Tissue Sarcoma AJCC v7; Stage IV Osteosarcoma AJCC v7; Stage IV Soft Tissue Sarcoma AJCC v7; Stage IVA Osteosarcoma AJCC v7; Stage IVB Osteosarcoma AJCC v7; Wilms Tumor
National Cancer Institute (NCI)
2017-07-31 PHASE2
NCT03213678 COMPLETED
Advanced Malignant Solid Neoplasm; Ann Arbor Stage III Non-Hodgkin Lymphoma; Ann Arbor Stage IV Non-Hodgkin Lymphoma; Malignant Glioma; Recurrent Ependymoma; Recurrent Ewing Sarcoma; Recurrent Glioma; Recurrent Hepatoblastoma; Recurrent Langerhans Cell Histiocytosis; Recurrent Malignant Germ Cell Tumor; Recurrent Malignant Solid Neoplasm; Recurrent Medulloblastoma; Recurrent Neuroblastoma; Recurrent Non-Hodgkin Lymphoma; Recurrent Osteosarcoma; Recurrent Peripheral Primitive Neuroectodermal Tumor; Recurrent Primary Central Nervous System Neoplasm; Recurrent Rhabdomyosarcoma; Recurrent Soft Tissue Sarcoma; Refractory Langerhans Cell Histiocytosis; Refractory Malignant Germ Cell Tumor; Refractory Malignant Solid Neoplasm; Refractory Neuroblastoma; Refractory Non-Hodgkin Lymphoma; Refractory Primary Central Nervous System Neoplasm; Rhabdoid Tumor; Stage III Osteosarcoma AJCC v7; Stage III Soft Tissue Sarcoma AJCC v7; Stage IV Osteosarcoma AJCC v7; Stage IV Soft Tissue Sarcoma AJCC v7; Stage IVA Osteosarcoma AJCC v7; Stage IVB Osteosarcoma AJCC v7; Wilms Tumor
National Cancer Institute (NCI)
2017-11-28 PHASE2
NCT04032080 COMPLETED
Triple Negative Breast Cancer
Baylor Research Institute
2019-09-05 PHASE2
NCT02549989 COMPLETED
Endometrial Cancer; Recurrent Endometrial Cancer
Memorial Sloan Kettering Cancer Center
2015-09 PHASE2
NCT02057133 ACTIVE_NOT_RECRUITING
Breast Neoplasms
Eli Lilly and Company
2014-03-10 PHASE1
NCT02124148 COMPLETED
Neoplasm Metastasis; Colorectal Neoplasms; Breast Cancer
Eli Lilly and Company
2014-06-18 PHASE1
NCT01655225 COMPLETED
Advanced Cancer; Metastatic Cancer; Non-Hodgkin's Lymphoma; Metastatic Breast Cancer; Malignant Mesothelioma; Non-small Cell Lung Cancer
Eli Lilly and Company
2012-07-31 PHASE1
NCT02407054 COMPLETED
Prostate Cancer Metastatic
Eli Lilly and Company
2015-04-29 PHASE2
NCT02784795 TERMINATED
Solid Tumor; Breast Cancer; Colon Cancer; Cholangiocarcinoma; Soft Tissue Sarcoma
Eli Lilly and Company
2016-11-04 PHASE1
NCT02079636 COMPLETED
Carcinoma, Non-small Cell Lung
Eli Lilly and Company
2014-03-28 PHASE1
NCT02981342 COMPLETED
Pancreatic Ductal Adenocarcinoma
Eli Lilly and Company
2017-01-12 PHASE2
NCT02443337 TERMINATED
Non-small Cell Lung Cancer Metastatic
Eli Lilly and Company
2015-07 PHASE2
NCT02536586 COMPLETED
Neoplasm
Eli Lilly and Company
2015-09 PHASE1
NCT02818335 COMPLETED
Healthy
Eli Lilly and Company
2016-07 PHASE1
NCT02575703 COMPLETED
Healthy
Eli Lilly and Company
2015-10 PHASE1
NCT02575703 Completed
Healthy
Eli Lilly and Company
2015-10 Phase 1
NCT02536586 Completed
Neoplasm
Eli Lilly and Company
2015-09 Phase 1
NCT02443337 Terminated
Non-small Cell Lung Cancer Metastatic
Eli Lilly and Company|SCRI Development Innovations LLC
2015-07 Phase 2

(data from https://clinicaltrials.gov, updated on 2026-06-22)

Check the Samotolisib (LY3023414) product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Compliance for Clinical Use

Mechanism and Biochemical Profile

Samotolisib functions as an oral, ATP-competitive inhibitor targeting class I phosphoinositide 3-kinase (PI3K) isoforms, mammalian target of rapamycin (mTOR), and DNA-dependent protein kinase (DNA-PK), effectively blocking downstream Akt phosphorylation and signaling. This dual inhibition of survival pathways and DNA repair mechanisms arrests cell cycle progression and triggers apoptosis, suppressing tumor cell proliferation in clinical indications such as advanced solid tumors and refractory pediatric malignancies.

Appendix RUO and cGMP Quality Standards

Quality Dimension RUO (Research Use Only) cGMP (Current Good Manufacturing Practice)
Clinical Applicability Prohibited in human clinical trials or medical diagnostics. Mandatory for human clinical trials (Phase I–III) and therapies.
Regulatory Status Non-regulated grade; exempt from drug manufacturing laws. Legally enforced by health authorities (e.g., FDA, EMA, NMPA).
Facility Environment Unclassified analytical or research laboratories. Validated Cleanrooms (ISO Class 5–8) with continuous monitoring.
Quality Control Basic purity and activity testing. Rigorous safety release testing (Sterility, Endotoxin, Mycoplasma).
Process Validation Basic equipment calibration; no process validation required. Full qualification (IQ/OQ/PQ) and complete batch records.
Quality Assurance Vendor self-declared without required formal QMS. Mandatory QA/QC unit, Change Control, CAPA, and vendor audits.
Regulatory Impact High risk of IND rejection if used as a critical raw material. Required for IND/NDA filings, supported by Drug Master Files (DMF).

Footnotes

Regulatory Note: Governed by FDA (21 CFR Parts 210/211/312), EMA (EudraLex Vol 4), ICH Guidelines (E6/Q7/Q9/Q10), and compendial standards (USP <71>/<85>/<1043>).

Note: Technical data last updated: Sep 1, 2026.