Obsidian Therapeutics Inc of Cambridge, US, has raised $160.5 million in an oversubscribed Series C financing round to advance a tumour-infiltrating lymphocyte (TIL) therapy in the clinic. TILs are treatments where tumour-infiltrating lymphocytes are removed from a patient’s tumour, grown in large numbers in a laboratory, and returned to the patient to help the immune system fight cancer. TILS are polyclonal cells with diverse receptors. Their advantage is said to be their ability to detect a wide range of tumour-associated antigens.
