I don't think SRPT gets a CRL, but I also don't believe lack of news indicates the odds of that lowering each day. I think the quiet period and the fact that the company is interacting with the FDA is a shield from releasing dystrophin data immediately. Because the data will be made public when the FDA makes its decision. Why else have a quiet period? It makes no sense to impose a quiet period and then as soon as data comes, end the quiet period. That's just normal business that wouldn't require a quiet period. I also can't think of a single example dating back to 2009 where the FDA has requested new data from a company and then that company releases said data publicly. If anything, they simply send out a PR that the new data has been submitted per the FDA's specifications. But they don't include the data.
I also don't think you can make the argument that they'd only release data if it was bad. Materially speaking, reasonable investors realize that good dystrophin data would also impact the share price, so if the data is going to be released, I'm of the opinion it will be released no matter what. But the quiet period tells me that it won't.
I agree that if the dyst data is bad, the FDA would waste no time issuing a CRL as soon as they see it.
Anyone with a brain knows that ESSENCE was going to be a placebo-controlled trial no matter what the outcome of eteplirsen's NDA is. The FDA wants a placebo controlled trial, and it behooves SRPT to get one started immediately. I don't think it's some sort of handshake agreement that it start now, and I don't think the FDA's decision is being held until ESSENCE starts. They'll decide independently of that.
Thig, the CDER made its decision based on what it believed; not based on spite. I get that it's hard to accept that, but it's the truth. Thankfully, Janet Woodcock has the ultimate say, and so long as dystrophin is present, it's a fair bet that she'll approve eteplirsen with AA.