Alpelisib (BYL719)

Catalog No.S2814 Batch:S281405

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Technical Data

Formula

C19H22F3N5O2S
Molecular Weight 441.47 CAS No. 1217486-61-7
Solubility (25°C)* In vitro DMSO 88 mg/mL (199.33 mM)
Ethanol 59 mg/mL (133.64 mM)
Water Insoluble
In Vivo (Add solvents to the product individually and in order.)
Homogeneous suspension
CMC-NA
≥5mg/ml Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
* <1 mg/ml means slightly soluble or insoluble.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
* Room temperature shipping (Stability testing shows this product can be shipped without any cooling measures.)

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Biological Activity

Description Alpelisib (BYL719) is a potent and selective PI3Kα inhibitor with an IC50 of 5 nM in a cell-free assay, and minimal effect on PI3Kβ/γ/δ. This compound is in Phase 2.
Targets
PI3Kα
(Cell-free assay)
5 nM
In vitro

Alpelisib (BYL719) inhibits the proliferation of breast cancer cell lines harbouring PIK3CA mutations, correlating with inhibition of various downstream signalling components of the PI3K/Akt pathway.

In Vivo

Alpelisib (BYL719) shows statistically significant dose-dependent anti-tumour efficacy in PIK3CA mutant xenograft models in rodents at doses exceeding 270 mg/d. It has a low clearance, a half-life of 8.5 h, and its exposure increases dose proportionally between 30mg/d and 450mg/d, displaying low inter-individual variability in Cmax and AUC in humans. At 270 mg/d, this compound shows first signs of clinical efficacy, including 1 confirmed partial response in a patient with ER+ breast cancer, and significant PET responses (PMR) and/or tumour shrinkage are achieved in 8 out of 17 evaluated patients.

Protocol (from reference)

Cell Assay:[2]
  • Cell Lines

    CW2 cells

  • Concentrations

    500 nM

  • Incubation Time

    72 h

  • Method

    Using increasing concentrations of alpelisib (BYL719) (0–1000 nM), cells were treated for 72 h. Cell viability was quantified using the CyQuant assay.
Animal Study:

[2]
  • Animal Models

    Female athymic nu/nu mice

  • Dosages

    40 mg/kg

  • Administration

    o.g.

References

  • http://cancerres.aacrjournals.org/cgi/content/short/72/8_MeetingAbstracts/CT-01?rss=1
  • https://pubmed.ncbi.nlm.nih.gov/34171264/

Customer Product Validation

BYL719 induces Apoptosis in MM cells. The effect of increasing concentrations of BYL719 (0-2.5 umol/l) for 48 h on the apoptosis of MM1s cells. The effect of BYL719 on the apoptosis signalling; cleaved PARP, caspase 3, caspase 9 by Western blotting. MM, multple myeloma.

Data from [ Br J Haematol , 2014 , 165(1), 89-101 ]

<p>AN3CA (B), JHUEM2 (D), and MFE296 (H) cells were treated with the indicated doses of BGJ398 and BYL719 alone or in combination for 96 hours, and an SRB assay was subsequently performed.</p>

, , Mol Cancer Ther, 2017, 16(4):637-648

<p>A549 cell was trypsinized and plated at 50% confluence in DMEM. 16 hours later, BYL719 was added at final concentrations of 0, 1, 5, 10 and 20uM. Another 24 hours later, cells were harvested in RIPA with protease and phosphatase inhibitor cocktail. Total protein concentration was measured by BCA method. Lysates equivalent to 20ug total protein were subject to Western Blot, using total- AKT, pS473-AKT, pT286-CyclinD1 and beta-actin (internal control) antibodies.</p>

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Sellecks Alpelisib (BYL719) Has Been Cited by 249 Publications

Targeting PI3K inhibitor resistance in breast cancer with metabolic drugs [ Signal Transduct Target Ther, 2025, 10(1):92] PubMed: 40113784
Tamoxifen induces PI3K activation in uterine cancer [ Nat Genet, 2025, 57(9):2192-2202] PubMed: 40846762
MicroRNA-mediated PTEN downregulation as a novel non-genetic mechanism of acquired resistance to PI3Kα inhibitors of head & neck squamous cell carcinoma [ Drug Resist Updat, 2025, 81:101251] PubMed: 40382983
Whole-exome tumor-agnostic ctDNA analysis enhances minimal residual disease detection and reveals relapse mechanisms in localized colon cancer [ Nat Cancer, 2025, 10.1038/s43018-025-00960-z] PubMed: 40301653
Circulating tumor cell plasticity determines breast cancer therapy resistance via neuregulin 1-HER3 signaling [ Nat Cancer, 2025, 6(1):67-85] PubMed: 39753722
RANKL/PD-1 dual blockade demonstrates survival benefit for patients with advanced lung adenocarcinoma harboring KRAS mutations [ Cell Rep Med, 2025, 6(7):102235] PubMed: 40669444
Oncogenic PIK3CA corrupts growth factor signaling specificity [ Mol Syst Biol, 2025, 21(2):126-157] PubMed: 39706867
The SGK3/GSK3β/β-catenin signaling promotes breast cancer stemness and confers resistance to alpelisib therapy [ Int J Biol Sci, 2025, 21(6):2462-2475] PubMed: 40303291
PI3K-dependent GAB1/Erk phosphorylation renders head and neck squamous cell carcinoma sensitive to PI3Kα inhibitors [ Cell Death Dis, 2025, 16(1):457] PubMed: 40533463
Role of the PI3K/AKT signaling pathway in the cellular response to Tumor Treating Fields (TTFields) [ Cell Death Dis, 2025, 16(1):210] PubMed: 40148314

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SHIPPING AND STORAGE
Selleck products are transported at room temperature. If you receive the product at room temperature, please rest assured, the Selleck Quality Inspection Department has conducted experiments to verify that the normal temperature placement of one month will not affect the biological activity of powder products. After collecting, please store the product according to the requirements described in the datasheet. Most Selleck products are stable under the recommended conditions.

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