CHICAGO--(BUSINESS WIRE)--Alnylam Pharmaceuticals, Inc. (Nasdaq: ALNY), a leading RNAi therapeutics company, announced today preliminary clinical data from its ongoing Phase I trial with ALN-VSP, a systemically delivered RNAi therapeutic for the treatment of advanced solid tumors with liver involvement. The data are being presented at the ASCO meeting in a poster titled “Interim safety and pharmacodynamic results for ALN-VSP02, a novel RNAi therapeutic for solid tumors with liver involvement,” in the Developmental Therapeutics – Experimental Therapeutics poster session being held from 8:00 a.m. to 12:00 p.m. CT in S Hall A2. The study results from the initial 19 patients in the first four dose cohorts demonstrate that ALN-VSP is well tolerated in most patients, and results from pharmacodynamic measurements provide preliminary evidence of clinical activity. The study has not yet reached a maximum tolerated dose and is continuing enrollment with dose escalation.