CCR8 and keratoconus: KC;iASPPΔ8/Δ8 pancreas-infiltrating γδ T cells expressed higher amounts of CCR8 (p = 2.1 × 10–3, Fig. 4H), whose expression strongly correlates with worse cancer prognosis [66, 67], and 41% of KC;iASPPΔ8/Δ8 pancreas-infiltrating γδ T cells expressed PD-1H (Fig. 4H).