Clinical data | |
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Trade names | Calquence |
Other names | ACP-196 |
AHFS/Drugs.com | Monograph |
MedlinePlus | a618004 |
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Routes of administration | By mouth |
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PDB ligand | |
ECHA InfoCard | 100.247.121 |
Chemical and physical data | |
Formula | C26H23N7O2 |
Molar mass | 465.517 g·mol−1 |
3D model (JSmol) | |
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Acalabrutinib, sold under the brand name Calquence, is a medication used to treat various types of non-Hodgkin lymphoma, including mantle cell lymphoma (MCL) and chronic lymphocytic leukemia/small lymphocytic Lymphoma (CLL/SLL). [7] It may be used both in relapsed as well as in treatment-naive settings. [8]
Common side effects include headaches, feeling tired, low red blood cells, low platelets, and low white blood cells. [7] It is a second generation Bruton's tyrosine kinase inhibitor. [9] [10] Acalabrutinib blocks an enzyme called Bruton's tyrosine kinase, which helps B cells to survive and grow. [5] By blocking this enzyme, acalabrutinib is expected to slow down the build-up of cancerous B cells in CLL, thereby delaying progression of the cancer. [5]
Acalabrutinib was approved for medical use in the United States in 2017, [7] and in the European Union in November 2020. [5]
In the European Union, acalabrutinib as monotherapy or in combination with obinutuzumab is indicated for the treatment of adults with previously untreated chronic lymphocytic leukaemia (CLL). [5] It is also indicated for the treatment of adults with chronic lymphocytic leukaemia (CLL) who have received at least one prior therapy. [5]
In the United States, acalabrutinib is indicated for the treatment of adults with mantle cell lymphoma (MCL) who have received at least one prior therapy, and for the treatment of adults with chronic lymphocytic leukemia (CLL) or small lymphocytic lymphoma (SLL). [4]
The most common adverse events were headache, diarrhea and weight gain. [10] Despite the appearance of a greater occurrence of transient headaches, data suggest a preferred advantage of acalabrutinib over ibrutinib due to expected reduced adverse events of skin rash, severe diarrhea, and bleeding risk. [10]
Acalabrutinib was approved for medical use in the United States in 2017, [7] and in the European Union in November 2020. [5]
As of February 2016, acalabrutinib had received orphan drug designation in the United States for mantle cell lymphoma and chronic lymphocytic leukemia (CLL), [11] [12] and was similarly designated as an orphan medicinal product by the European Medicines Agency (EMA) Committee for Orphan Medicinal Products (COMP) for treatment of three indications: CLL/small lymphocytic lymphoma (SLL), mantle cell lymphoma (MCL), and lymphoplasmacytic lymphoma (Waldenström's macroglobulinaemia, WM). [13] [14] [15] [16] Approval would result in a 10-year period of market exclusivity for the stated indications within Europe. [17]
It was developed by Acerta Pharma. [18] After promising results for CLL in initial clinical trials, [9] Astra Zeneca purchased a 55% stake in Acerta Pharma for $4 billion in December 2015, with an option to acquire the remaining 45% stake for an additional $3 billion, conditional on approval in both the US and Europe and the establishment of commercial opportunity. [19]
Acalabrutinib is the international nonproprietary name (INN), [20] and the United States Adopted Name (USAN). [21]
Relative to ibrutinib, acalabrutinib demonstrated higher selectivity and inhibition of the targeted activity of BTK, while having a much greater IC50 or otherwise virtually no inhibition on the kinase activities of ITK, EGFR, ERBB2, ERBB4, JAK3, BLK, FGR, FYN, HCK, LCK, LYN, SRC, and YES1. [10] In addition, in platelets treated with ibrutinib, thrombus formation was clearly inhibited while no impact to thrombus formation was identified relative to controls for those treated with acalabrutinib. [10] These findings strongly suggest an improved safety profile of acalabrutinib with minimized adverse effects relative to ibrutinib. [10] In pre-clinical studies, it was shown to be more potent and selective than ibrutinib, the first-in-class BTK inhibitor. [9] [10]
The interim results of the still on-going[ when? ] first human phase I/II clinical trial (NCT02029443) with 61 patients for the treatment of relapsed chronic lymphocytic leukemia (CLL) are encouraging, with a 95% overall response rate demonstrating potential to become a best-in-class treatment for CLL. [9] Notably, a 100% response rate was achieved for those people which were positive for the 17p13.1 gene deletion, a subgroup that typically results in a poor response to therapy and expected outcomes. [10]
Chronic lymphocytic leukemia (CLL) is a type of cancer in which the bone marrow makes too many lymphocytes. Early on, there are typically no symptoms. Later, non-painful lymph node swelling, feeling tired, fever, night sweats, or weight loss for no clear reason may occur. Enlargement of the spleen and low red blood cells (anemia) may also occur. It typically worsens gradually over years.
Bruton's tyrosine kinase, also known as tyrosine-protein kinase BTK, is a tyrosine kinase that is encoded by the BTK gene in humans. BTK plays a crucial role in B cell development.
Ofatumumab is a fully human monoclonal antibody to CD20, which appears to provide rapid B-cell depletion. Under the brand name Kesimpta, it is approved for the treatment of multiple sclerosis in the United States as well as in the European Union and other regions. Under the brand name Arzerra, it is approved for the treatment of certain types of chronic lymphocytic leukemia (CLL) in the United States. It is sold by Novartis under license from Genmab.
Richter's transformation (RT), also known as Richter's syndrome, is the conversion of chronic lymphocytic leukemia (CLL) or its variant, small lymphocytic lymphoma (SLL), into a new and more aggressively malignant disease. CLL is the circulation of malignant B lymphocytes with or without the infiltration of these cells into lymphatic or other tissues while SLL is the infiltration of these malignant B lymphocytes into lymphatic and/or other tissues with little or no circulation of these cells in the blood. CLL along with its SLL variant are grouped together in the term CLL/SLL.
Mantle cell lymphoma (MCL) is a type of non-Hodgkin's lymphoma, comprising about 6% of cases. It is named for the mantle zone of the lymph nodes where it develops. The term 'mantle cell lymphoma' was first adopted by Raffeld and Jaffe in 1991.
Bendamustine, sold under the brand name Treanda among others, is a chemotherapy medication used in the treatment of chronic lymphocytic leukemia (CLL), multiple myeloma, and non-Hodgkin's lymphoma. It is given by injection into a vein.
Obinutuzumab, sold under the brand name Gazyva among others, is a humanized anti-CD20 monoclonal antibody used as a treatment for cancer. It was originated by GlycArt Biotechnology AG and developed by Roche.
Moxetumomab pasudotox, sold under the brand name Lumoxiti, is an anti-CD22 immunotoxin medication for the treatment of adults with relapsed or refractory hairy cell leukemia (HCL) who have received at least two prior systemic therapies, including treatment with a purine nucleoside analog. Moxetumomab pasudotox is a CD22-directed cytotoxin and is the first of this type of treatment for adults with HCL. The drug consists of the binding fragment (Fv) of an anti-CD22 antibody fused to a toxin called PE38. This toxin is a 38 kDa fragment of Pseudomonas exotoxin A.
Ibrutinib, sold under the brand name Imbruvica among others, is a small molecule drug that inhibits B-cell proliferation and survival by irreversibly binding the protein Bruton's tyrosine kinase (BTK). Blocking BTK inhibits the B-cell receptor pathway, which is often aberrantly active in B cell cancers. Ibrutinib is therefore used to treat such cancers, including mantle cell lymphoma, chronic lymphocytic leukemia, and Waldenström's macroglobulinemia. Ibrutinib also binds to C-terminal Src Kinases. These are off-target receptors for the BTK inhibitor. Ibrutinib binds to these receptors and inhibits the kinase from promoting cell differentiation and growth. This leads to many different side effects like left atrial enlargement and atrial fibrillation during the treatment of Chronic Lymphocytic Leukemia.
Idelalisib, sold under the brand name Zydelig, is a medication used to treat certain blood cancers. Idelalisib acts as a phosphoinositide 3-kinase inhibitor; more specifically, it blocks P110δ, the delta isoform of the enzyme phosphoinositide 3-kinase. It was developed by Gilead Sciences. It is taken orally.
Venetoclax, sold under the brand names Venclexta and Venclyxto, is a medication used to treat adults with chronic lymphocytic leukemia (CLL), small lymphocytic lymphoma (SLL), or acute myeloid leukemia (AML).
Duvelisib, sold under the brand name Copiktra, is a medication used to treat chronic lymphocytic leukemia (CLL), small lymphocytic lymphoma (SLL), and follicular lymphoma after other treatments have failed. It is taken by mouth. It is a PI3 kinase inhibitor.
Umbralisib, sold under the brand name Ukoniq, is an anti-cancer medication for the treatment of marginal zone lymphoma (MZL) and follicular lymphoma (FL). It is taken by mouth.
Zanubrutinib, sold under the brand name Brukinsa, is an anticancer medication used for the treatment of mantle cell lymphoma (MCL), Waldenström's macroglobulinemia (WM), marginal zone lymphoma (MZL), and chronic lymphocytic leukemia (CLL). Zanubrutinib is classified as a Bruton's tyrosine kinase (BTK) inhibitor. It is given by mouth.
Brexucabtagene autoleucel, sold under the brand name Tecartus, is a cell-based gene therapy medication for the treatment of mantle cell lymphoma (MCL) and acute lymphoblastic leukemia (ALL).
BeiGene, Ltd. is a China-based drug developer. It specializes in the development of drugs for cancer treatment. Founded in 2010 by chief executive officer John V. Oyler and Xiaodong Wang, the multinational company headquartered in Cambridge, Massachusetts has offices in North America, Europe, South America, Asia and Australia. BeiGene has a large presence in Chinese market. BeiGene has developed several pharmaceuticals, including tislelizumab, a checkpoint inhibitor, and zanubrutinib, a Bruton's tyrosine kinase inhibitor.
Mosunetuzumab, sold under the brand name Lunsumio, is a monoclonal antibody used for the treatment of follicular lymphoma. It bispecifically binds CD20 and CD3 to engage T-cells. It was developed by Genentech.
Pirtobrutinib, sold under the brand name Jaypirca, is an anticancer medication that is used to treat mantle cell lymphoma. It inhibits B cell lymphocyte proliferation and survival by binding and inhibiting Bruton's tyrosine kinase (BTK). It is taken by mouth.
Nemtabrutinib is a small molecule drug that works as a reversible Bruton's tyrosine kinase (BTK) inhibitor; unlike other BTK inhibitors it also works against some mutated forms of BTK. Merck paid $2.7 billion to acquire the company ArQule and the drug, which is being investigated as a cancer treatment.
Orelabrutinib is a drug for the treatment of cancer.