When the 2020 AACR abstract titles were released
they turned Iovance into an instant winner, identifying lung cancer as a
new indication for tumour-infiltrating lymphocytes (TILs), one example
of which is Iovance’s lead, lifileucel. With this morning’s unveiling of
the full abstracts investors who had bid the group up 17% breathed a
sigh of relief: there were indeed multiple complete responses – two, to
be precise – in the Lee Moffitt Cancer Center’s 20-subject TIL study in question.
Just as important is durability, with both remissions ongoing almost
one year after TIL infusion, the AACR abstract reveals. And one has been
observed in a particularly intractable tumour type, a never-smoker with
low PD-L1 expression. Still, the single-cohort study raises questions
over the TILs’ precise effect, given that it included Opdivo, as well as
lymphodepleting chemotherapy and IL-2. Similar questions had been raised when at last year’s Asco Iovance impressed in cervical cancer;
until then TILs had shown limited potential beyond melanoma. While
Opdivo on its own is unlikely to be responsible for the remissions
reported at AACR, expect the TILs’ contribution to be scrutinised when
the study is discussed in full tomorrow.
https://www.evaluate.com/vantage/articles/news/snippets/aacr-2020-iovance-doesnt-disappoint
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