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Sunesis Pharmaceuticals, Inc. Message Board

  • robchadwick robchadwick Sep 14, 2012 5:51 PM Flag

    Acute myleoid leukemia vs myelodysplastic syndrome

    Anyone familiar with the science, would be interested in your thoughts on whether this drug could potentially be useful in treating mds aka pre-leukemia aka pre-AML? prevelence of MDS is twice AML and currently the only treatment is aronesp type drugs.. Much bigger market .. Seems like it would be worth a clinical trial at some point.

    Sentiment: Hold

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    • Thanks jjgiablue for the update analyst comments regarding MDS.. I am assuming this was referring to Myelodysplastic syndrome which is at least common than AML and tends to have a much longer lifespan.

      New Leerink analyst comments
      The LI-1 Trial has a “pick a winner” design that evaluates several candidates in front-line (FL) AML and could significantly de-risk vosaroxin potential in this setting. The trial is designed to identify promising FL AML candidates that may at least double complete remission (CR) or 12-month survival vs. low dose Ara- C (LDAC) SOC. Baseline expectations for LDAC should be ~15-20% for CRs and 18-20% for 12-
      month survival. Advancing from Stage-1 to Stage-2 of this trial would imply a candidate can demonstrate 30-40% CR rate and +30% 12-month survival. The DMC reviews Stage-1 data after 50 experimental arm patients can be compared to 50 in the LDAC SOC comparator arm and will look at both CR rate and 12-month survival rate. Vosaroxin's LI-1 updates in early 3Q13 Arm-3 (monotherapy) and 4Q13 Arm-4 (combo with LDAC) could be major catalysts driving us to include meaningful FL revenues in our model. While it is risky to predict Phase III results based on Phase II data, we are at least encouraged that the previous FL Phase II REVEAL-1 Vosaroxin monotherapy trial (non-randomized) demonstrated a 31% CR rate (combined CR+CRp rate 35%) and a 38% 12-month survival rate. Interim data from MD Anderson's IST in MDS is important to Sunesis as it will provide the first look at combining vosaroxin with a hypomethylating agent such as Decitabine. While the primary end point of this trial will evaluate maximum tolerated doses (MTD) of the combination, it should also provide emerging efficacy details characterizing vosaroxin's potential as an MDS therapeutic option. Given that we
      currently do not include any MDS revenues in our model, this trial could begin to de-risk MDS as a potential future growth opportunity for Vosaroxin

      Sentiment: Hold

    • Dan Swisher said it is on the radar and possibly would be pursuing I and D sometime in the near future. I agree that it is a natural fit going along with same biopathological process as AML.

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