Chester17 Jan 2020 08:13
Chester,
Re. your question regarding SCIB1 recruitment, just to add to TF's comments.
Firstly, I think the general impression is that there are thousands and thousands of patients out there to select from which makes the lack of recruitment baffling. That's not quite the case. Although melanoma is one of the most common cancers in the UK, fortunately the vast majority are early stage and easily removed by surgery. Only about 10% of cases are advanced melanoma and depending on which publication you read that's probably somewhere between 1000 and 1500 cases in the whole of the UK each year. Remember then that Scancell only have one study centre open and work out how many patients are likely to be walking through the door each month. Then factor in the list following.
1) They must be presenting for the first time with advanced melanoma, ie. this must be the first treatment they have ever received for advanced melanoma.
2) About half of all patients will have BRAF positive melanoma and for those patients, the first line standard of care treatment is likely to be a BRAF inhibitor rather than Keytruda so they wouldn't qualify.
3) Of those who are left, only around half will be the correct HLA type
4) Those who get this far still have to meet all the other entry criteria.
5) The patient has to agree to take part in the trial - not a given by any means
So they're recruiting from a relatively small patient pool and it always was going to be a slow process but you can understand why it's so very slow with just one study centre open.