World Journal of
Pharmaceutical and Life Sciences

KEYTRUDA QLEX, AN SC FORMULATION OF PEMBROLIZUMAB

Maahi Prajapati, *Tilala Ansh, Patel Mayuri

ABSTRACT

KEYTRUDA QLEX (pembrolizumab plus berahyaluronidase alfa-pmph) is a novel subcutaneous injection formulation of the cancer immunotherapy agent Keytruda (pembrolizumab), which has just received FDA approval. For the majority of solid tumor indications for which intravenous (IV) Keytruda is licensed, it provides a quicker and more convenient delivery technique for adults and some paediatric patients. The programmed death-1 (PD-1) receptor pathway has been identified as a crucial mechanism by which tumors evade immune monitoring in light of recent developments in our understanding of the relationship between the immune system and cancer. The PD-1/programmed death ligand-1 (PD-L1) relationship was found to be a significant therapeutic target, much like nivolumab. The humanized monoclonal antibody Keytruda Qlex (pembrolizumab formulation), an immune checkpoint modulator created by Merck & Co., suppresses PD-1 and reinstates the anti-tumor immune response. A significant advancement in cancer immunotherapy was made in 2014 when pembrolizumab became the first PD-1 inhibitor to get regulatory approval in the US for the treatment of patients with metastatic or incurable melanoma. Keytruda generates long-lasting responses in a variety of cancers, according to later clinical research. Non-small cell lung cancer (NSCLC), head and neck squamous cell carcinoma, renal cell carcinoma, urothelial carcinoma, and Hodgkin lymphoma were among the cancers in which early-phase trials in solid tumors demonstrated notable activity. Pembrolizumab has become one of the most popular immune checkpoint inhibitors in the world as a result of these discoveries, which led to several additional approvals. Keytruda has been well studied as a monotherapy and in combination regimens for non-small cell lung cancer. Studies showed that patients with PD-L1-expressing tumors had better overall survival, especially when first-line treatment was administered. In patients with advanced non-small cell lung cancer, combination studies involving platinum-based chemotherapy, CTLA-4 inhibitors (ipilimumab), anti-angiogenic drugs, and different molecular targeted therapies have demonstrated synergistic effects and improved response rates. Ready-to-use injectable formulations that enable easy dosing and administration are referred to in the "Qlex" presentation. In order to overcome resistance and significantly enhance patient outcomes, ongoing research continues to assess the best sequencing and combination methods for Keytruda. Overall, by focusing on the PD-1 pathway and stopping tumors from eluding host immune defences, Keytruda Qlex is a significant actor in contemporary oncology. Immune checkpoint modulator, Keytruda Qlex, pembrolizumab, melanoma, monoclonal antibody immunotherapy, PD-1/PD-L1 pathway, non-small cell lung cancer, programmed death-1 inhibitor, and programmed death ligand-1.

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