On the extrahaematological ground, there were 11 adverse events (AEs) in six patients, including grade 3 non‐cardiac thoracic pain and drug‐related pruritus without MAR, both causing treatment discontinuation; grade 2 thyroiditis, varicella zoster reactivation and pruritus; grade 1 photosensitivity, upper respiratory tract infection, COVID‐19, alanine aminotransferase increase and constipation (the latter in two cases). This evidence concerns the gene GPT and Pruritus.