Trilaciclib, sold under the brand name Cosela, is a
medication
Medication (also called medicament, medicine, pharmaceutical drug, medicinal product, medicinal drug or simply drug) is a drug used to medical diagnosis, diagnose, cure, treat, or preventive medicine, prevent disease. Drug therapy (pharmaco ...
used to reduce the frequency of chemotherapy-induced bone marrow suppression.
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The most common side effects include fatigue; low levels of calcium, potassium and phosphate; increased levels of an enzyme called aspartate aminotransferase; headache; and infection in the lungs (pneumonia).
Trilaciclib may help protect bone marrow cells from damage caused by chemotherapy by inhibiting
cyclin-dependent kinase
Cyclin-dependent kinases (CDKs) are a predominant group of serine/threonine protein kinases involved in the regulation of the cell cycle and its progression, ensuring the integrity and functionality of cellular machinery. These regulatory enzym ...
4/6, a type of enzyme.
Trilaciclib is the first therapy in its class and was approved for medical use in the United States in February 2021.
The U.S.
Food and Drug Administration
The United States Food and Drug Administration (FDA or US FDA) is a List of United States federal agencies, federal agency of the United States Department of Health and Human Services, Department of Health and Human Services. The FDA is respo ...
considers it to be a
first-in-class medication.
[ ]
Chemotherapy drugs are designed to kill cancer cells but can damage normal tissues as well.
The bone marrow is particularly susceptible to chemotherapy damage.
The bone marrow makes red blood cells, white blood cells, and platelets (small fragments in the blood) that transport oxygen, fight infection, and stop bleeding.
When damaged, the bone marrow produces fewer of these cells, leading to fatigue, increased risk of infection, and bleeding, among other problems.
Trilaciclib may help protect the normal bone marrow cells from the harmful effects of chemotherapy.
Medical uses
Trilaciclib is
indicated
In medicine, an indication is a valid reason to use a certain test, medication, procedure, or surgery. There can be multiple indications to use a procedure or medication. An indication can commonly be confused with the term diagnosis. A diagnosis ...
to reduce the frequency of chemotherapy-induced bone marrow suppression in adults receiving certain types of chemotherapy for extensive-stage (when the cancer has spread beyond the lungs) small cell lung cancer.
History
The effectiveness of trilaciclib was evaluated in three randomized, double-blind, placebo-controlled studies in participants with extensive-stage small cell lung cancer.
Combined, these studies randomly assigned 245 participants to receive either an intravenous infusion of trilaciclib or a placebo before chemotherapy.
The studies then compared the two groups for the proportion of participants with severe neutropenia (a very low count of white blood cells called neutrophils) and the duration of severe neutropenia in the first cycle of chemotherapy.
In all three studies, participants who received trilaciclib had a lower risk of having severe neutropenia compared to participants who received a placebo.
Among those who had severe neutropenia, participants who received trilaciclib, on average, had it for a shorter time than participants who received a placebo.
The U.S.
Food and Drug Administration
The United States Food and Drug Administration (FDA or US FDA) is a List of United States federal agencies, federal agency of the United States Department of Health and Human Services, Department of Health and Human Services. The FDA is respo ...
(FDA) granted the application for trilaciclib
priority review and
breakthrough therapy designations.
The FDA granted the approval of Cosela to G1 Therapeutics, Inc.
References
External links
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{{Portal bar , Medicine
Protein kinase inhibitors
Chemotherapeutic adjuvants
Disubstituted pyridines
4-Methylpiperazin-1-yl compounds
Spiro compounds
Amides
Guanidines
CDK inhibitors