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Expert Interview

Slingshot members are talking to an expert! The topic is:

Discussing the Topline Results from Alnylam's APOLLO-B Phase 3 Study of Patisiran in Patients with ATTR Amyloidosis with Cardiomyopathy

Ticker(s): ALNY

Who's the expert?

Institution: Brigham and Women's | Harvard

  • Associate Physician in Cardiovascular Medicine at BWH and an Instructor in Medicine at Harvard Medical School.
  • Manages 200 patients with cardiac amyloidosis.
  • Research interests have focused on the use of imaging in cardiac amyloidosis, particularly for early detection of disease and to track response to therapy; site-PI in two large multi-center phase 3 trials of novel gene-silencers in transthyretin cardiac amyloidosis (ATTR). 

Interview Questions
Q1.

On a scale from 1-10 (10 being extremely excited) where would you rate your level of excitement for patisiran?

Added By: c_admin
Q2.

Roughly how many patients with ATTR amyloidosis do you currently manage?

Added By: yusuff_admin
Q3.

How do you envision an Onpattro approval would change your use of tafamidis? Do you see it replacing tafamidis for any of your patients or used in combination?

Added By: mattiw2002
Q4.

Describe the patient for whom you'd prescribe Onpattro? New patient? Patient already on tafamidis therapy?

Added By: mattiw2002
Q5.

High level view of APOLLO-B trial results

Added By: user1ae2bf5f
Q6.

Numbers from topline results will be shared at ISA in September.   Is there a bar for 6mwt that will make the result clinically meaningful vs. not?

Same question re: KCCQ scale - Is there a stat sig change vs. placebo that is NOT clinically meaningful and if so what is the bar for a compelling benefit?

Added By: user1ae2bf5f
Q7.

APOLLO-B included patients on tafamidis for >=6months at baseline IF they showed signs of progression while on treatment. 

What are the criteria that define disease progression while on Tafamidis?  
What percent of your patients on tafamidis fall into this category?
Is this the patient population you would target for treatment with Onpattro?

Added By: user1ae2bf5f
Q8.

Alnylam says the trial was not powered or long enough in duration to demonstrate mortality benefit.  P value was only stat sig on 6mwt but not the secondary endpoints on mortality and hospitalization that don't include 6mwt.   

Will you still want to use this drug based solely on 6mwt and KCCQ?  
Related to previous question about effect size, will that matter more in the context of no mortality benefit demonstrated by the time of approval?

Added By: user1ae2bf5f
Q9.

Your view of the safety profile.  
Importance (or lack thereof) of increase in arthralgia and muscle spasms on the treatment?

Added By: user1ae2bf5f
Q10.

What is the implication that NYHA class 3 of high risk was excluded from the trial?
Is it harder to improve their 6mwt and thus helped achieve positive results?Or would they get the most benefit on 6mwt and therefore it actually made the trial more difficult to show a benefit?
In the context of who you might put on Onpattro, does this limit its use, and are these not the patients who may need the most help beyond tafamidis?   Will you also not treat Class 3 high risk with Onpattro?

Added By: user1ae2bf5f
Q11.

Assuming the results in September are sufficiently meaningful, how will this play in the market?  If used as a combo with tafamidis, will any insurers pay for that?

administration is IV dosing every 3 weeks. Is this reasonable for patients? 

Added By: user1ae2bf5f
Q12.

Both event-based outcome measurements have nominal p value nowhere near significance.  But p-value in overall group is 0.56 while in those NOT on tafamidis it is 0.99, very close to 1.  -- Does this suggest most events are happening in those on tafamidis (with progression) and therefore sicker patients, and does this actually lend some credence to why the acoramidis trial may have failed since patients not on tafamidis and entering that trial are going to be less sick nowadays?

Added By: user1ae2bf5f
Q13.

Rate your level of excitement about patisiran for ATTR Amyloidosis with Cardiomyopathy on a scale of 1-10 and provide the rationale.

Added By: user1ae2bf5f
Q14.

How important to you is Onpattro's silencer/reversal ability vs tafamidis' stabilizer claim?

Added By: mattiw2002

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