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λ§μν°λμ μ£Όλ‘ λ°λ €κ²¬μ μ μ λΆκ°λ₯ν λΉλ§μΈν¬μ’ (νΉν λμ°λ³μ΄ c-KIT μμ©μ²΄κ° νμΈλ κ²½μ°) μΉλ£μ μ¬μ©λλ **λ¨λ°±μ§ ν°λ‘μ ν€λμμ μ΅μ μ **μ λλ€. μν νΌ νΌλΆμΌ, μΌμ¦μ± μ₯μ§ν, 골μ‘μ’ , νκ΄μ‘μ’ κ³Ό κ°μ λ€λ₯Έ μΌμ¦μ± λ° μ’ μμ± μ§νμ λν μ¬μ©λ μ°κ΅¬λκ³ μμ΅λλ€. > **μμ κ²½κ³ :** λ§μν°λμ **μΈν¬λ μ± μ½λ¬Ό**μ λλ€. μ°λ°μ μΈ λ ΈμΆμ λ°©μ§νκΈ° μν΄ μμλ£μ§κ³Ό λ°λ €λλ¬Ό 보νΈμ λͺ¨λ μ격ν μμ λ° μ·¨κΈ νλ‘ν μ½μ μ€μν΄μΌ ν©λλ€.
μμ© κΈ°μ : Masitinib acts as a **protein tyrosine kinase (TK) inhibitor**. It selectively and effectively binds with high affinity to mutated forms of the **c-KIT tyrosine kinase receptor**. **c-KIT receptor** β Inhibition blocks the TK receptor pathways that are essential for cell replication, survival, and differentiation, thereby halting tumor growth and progression.
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- Non-resectable mast cell tumours (Patnaik grade 2 or 3) Β· See Appendix for chemotherapy protocols Β· PO Β· unknown Β· unknown Β· Preferably with a confirmed mutated c-KIT tyrosine kinase receptor.
- Injection site sarcoma, asthma (investigational) Β· Limited evidence: administered to healthy cats Β· PO Β· unknown Β· unknown Β· Not licensed in cats. Further clinical trials required. Monitor closely.
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- Pregnant or lactating bitches
- Dogs < 24 months old
- Dogs < 7 kg body weight
- Pre-existing signs of myelosuppression
- Previous hypersensitivity to masitinib
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- Diarrhoea (mild to moderate)
- Vomiting (mild to moderate)
- Hair coat changes or alopecia
- Renal toxicity
- Anaemia
- Protein loss (protein-losing nephropathy/enteropathy)
- Myelosuppression
- Increased liver enzyme activity
- Lethargy
- Cough
- Lymphadenomegaly
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- Highly protein-bound drugs Β· May displace masitinib or be displaced, increasing the risk of adverse side effects Β· moderate
- Cytochrome P450 inhibitors or inducers Β· May alter the metabolism of masitinib, increasing the risk of toxicity or reducing efficacy Β· moderate
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- Blood pressure (baseline and monthly)
- Urinalysis (baseline and monthly)
- Haematology (baseline and monthly)
- Biochemistry (baseline and monthly)
- Coagulation profiles (if adverse signs witnessed)
- Faecal occult blood tests (if adverse signs witnessed)
- Weekly owner check-ins for the first 6 weeks to monitor for side effects
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No specific overdose information is provided in the monograph. > **Clinical Pearl:** Overdose of tyrosine kinase inhibitors typically exacerbates gastrointestinal toxicity (severe vomiting, diarrhea) and myelosuppression. Treatment is symptomatic and supportive. Monitor renal and hepatic parameters closely.
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