Pharmaceutical form comprising a cell regulating factor and/or a cell proliferation promoter

The invention concerns a pharmaceutical form comprising a support material and at least a cell regulating factor and/or a cell proliferation promoter, preferably a growth factor. The invention is characterised in that the support material consists, for at least 90 wt. % of a composition based on methylidene malonate containing 0 to 10 wt. % of one or several methylidene malonate of formula (I) wherein: A and B independently represent a group (a) or (b) wherein R1 and R2 independently represent a C1-C6 linear or branched alkyl group, and n is an integer ranging between 1 and 5; 10 to 90 wt. %, preferably 50 to 90 wt. % of one or several methylidene malonate oligomer(s) having a molecular weight not more than 6000 and consisting of repeat units of formula (II) wherein A and B are such as defined above; 10 to 90 wt. %, preferably 10 to 50 wt. % of one or several methylidene malonate polymer(s) having a molecular weight more than 6000 and consisting of repeat units of formula (II). Said pharmaceutical form is useful for treating skin lesions.