Title:Pirtobrutinib: First Non-covalent Tyrosine Kinase Inhibitor for
Treating Relapsed or Refractory Mantle Cell Lymphoma in Adults
Volume: 31
Issue: 30
Author(s): Surya K. De*
Affiliation:
- Department of Chemistry, Conju-Probe, San Diego, California, USA
- Bharath University, Chennai, Tamil
Nadu, 600126, India
Keywords:
Mantle cell lymphoma, bruton tyrosine kinase inhibitors, pirtobrutinib, ibrutinib, acalabrutinib, zanubrutinib.
Abstract: Mantle Cell Lymphoma (MCL) is an aggressive subtype of Non-hodgkin's
Lymphoma (NHL). Bruton Tyrosine Kinase (BTK) is a non-receptor tyrosine kinase, and
is one of the therapeutic targets for B-cell-driven malignancies. Approved covalent BTK
inhibitors such as ibrutinib, acalabrutinib, and zanubrutinib are associated with treatment
limitations due to off-target side effects and the development of C481 substitution resistance
mutations. Pirtobrutinib was approved by the US FDA on January 27, 2023, for
the treatment of relapsed or refractory mantle cell lymphoma, including the resistance to
covalent BTK inhibitors. In this perspective, physicochemical properties, synthesis, dosage
and administration, mechanism of action, pharmacodynamics, pharmacokinetics, drug
interactions, and treatment-emergent adverse events of pirtobrutinib are discussed.