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Home » Directories » FDA Approved Drugs » Keytruda (pembrolizumab)

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Keytruda (pembrolizumab)

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    General Information

    Keytruda (pembrolizumab) is a programmed death receptor-1 (PD 1)-blocking, humanized monoclonal antibody.

    Keytruda is specifically indicated for the treatment of adult and pediatric patients with refractory classical Hodgkin lymphoma (cHL), or who have relapsed after 3 or more prior lines of therapy.

    Keytruda is supplied as a solution for intravenous administration. The recommended dose of Keytruda in adults is 200 mg administered as an intravenous infusion over 30 minutes every 3 weeks until disease progression or unacceptable toxicity, or up to 24 months in patients without disease progression.
    The recommended dose of Keytruda in pediatric patients is 2 mg/kg (up to a maximum of 200 mg), administered as an intravenous infusion over 30 minutes every 3 weeks until disease progression or unacceptable toxicity, or up to 24 months in patients without disease progression. 

     

    Clinical Results

    FDA Approval

    Keytruda for classic Hodgkin lymphoma was approved under accelerated approval based on tumor response rate and durability of response. Continued approval for this indication may be contingent upon verification and description of clinical benefit in the confirmatory trials. 

    The efficacy of Keytruda was investigated in KEYNOTE-087, a multicenter, non-randomized, open-label trial in 210 patients with relapsed or refractory cHL. Patients received Keytruda 200 mg intravenously every 3 weeks until unacceptable toxicity or documented disease progression, or for up to 24 months in patients who did not progress. Disease assessment was performed every 12 weeks. The major efficacy outcome measures (ORR, CRR, and duration of response) were assessed by blinded independent central review according to the 2007 revised International Working Group (IWG) criteria. Data demonstrated an overall response rate of 69 percent after receiving 200 mg every three weeks, with a complete remission rate of 22 percent and a partial remission rate 47 percent.

    Side Effects

    Adverse effects associated with the use of Keytruda may include, but are not limited to, the following:

    fatigue

    musculoskeletal pain

    decreased appetite

    pruritus

    diarrhea

    nausea

    rash

    pyrexia

    cough

    dyspnea

    constipation

    pain

    abdominal pain

     

    Mechanism of Action

    Keytruda (pembrolizumab) is a programmed death receptor-1 (PD 1)-blocking, humanized monoclonal IgG4 kappa antibody. Binding of the PD-1 ligands, PD-L1 and PD-L2, to the PD-1 receptor found on T cells, inhibits T cell proliferation and cytokine production. Upregulation of PD-1 ligands occurs in some tumors and signaling through this pathway can contribute to inhibition of active T-cell immune surveillance of tumors. Pembrolizumab is a monoclonal antibody that binds to the PD-1 receptor and blocks its interaction with PD-L1 and PD-L2, releasing PD-1 pathway-mediated inhibition of the immune response, including the anti-tumor immune response. 

    Additional Information

    For additional information regarding Keytruda or classical Hodgkin Lymphoma please visit https://www.keytruda.com/

    Approval Date: 2017-03-01
    Company Name: Merck
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