The present invention relates to a fusion protein comprising a protein transduction domain capable of introducing the fusion protein into a mammalian cell and an anti-apoptotic protein comprising the amino acid of the sequence of SEQ ID NO:1 or an anti-apoptotically active variant or fragment thereof. The invention also relates to a pharmaceutical composition comprising such a fusion protein, in particular for blocking apoptosis in a patient in need thereof. The invention also provides a polynucleotide encoding such a fusion protein, an expression vector comprising the polynucleotide and a host cell comprising the expression vector. In a further aspect, the invention relates to the use of any of theses materials for the preparation of a medicament for blocking apoptosis in a patient in need thereof.