SELLAS Life Sciences Group is a late-stage clinical biopharmaceutical company focused on developing cancer immunotherapeutics for a range of cancer indications. Co.'s product candidates include galinpepimut-S (GPS) and nelipepimut-S (NPS). Co.'s primary product candidate, GPS, is a cancer immunotherapeutic agent licensed from Memorial Sloan Kettering Cancer Center that targets the Wilms tumor 1 protein, which is present in 20 or more cancer types. NPS is a cancer immunotherapy targeting the human epidermal growth factor receptor 2 expressing cancers.