Candidate: Sylvant (siltuximab)

Category: ANTIBODY

Type: Monoclonal antibody targeting Interleukin-6 (IL-6), approved in the U.S., Europe, and other countries for the treatment of patients with multicentric Castleman disease (MCD).

Status: EUSA Pharma on April 1 announced initial preliminary results from the Papa Giovanni XXIII Hospital-sponsored SISCO (Siltuximab ISerious COVID-19) Study (NCT04322188). Interim data from the first 21 patients treated with Sylvant and followed for up to seven days showed that seven patients experienced a clinical improvement with a reduced need for oxygen support, while another nine patients saw their condition stabilize, indicated by no clinically relevant changes. C-Reactive Protein levels, a marker of systemic inflammation, declined from baseline through to Day 5 following treatment in all 16 patients who showed sufficient recorded values.

The next phase of data will compare outcomes in matched case-control patients not treated with Sylvant, and is expected in coming weeks. Twenty-one patients were enrolled in the study, which evaluated Sylvant in COVID-19 patients who had developed serious respiratory complications.


COVID-19: 200 Candidates and Counting

To navigate through the >200 potential therapeutic and vaccine options for COVID-19, GEN has grouped the candidates into four broad categories based on their developmental and (where applicable) clinical progress:

FRONT RUNNER – the most promising therapeutics/vaccines based on clinical progress, favorable data or both.

DEFINITELY MAYBE – earlier phases with promising partners, or more advanced candidates in development that have generated uneven data

KEEPING AN EYE ON… – interesting technology, attracting notable partners, or both, but preliminary data.

TOO SOON TO TELL – longshots pending additional experimental and/or clinical data.

GEN has also tagged the most common treatment types:

● ANTIVIRAL
● VAX
● ANTIBODY
● RNA