CD8A and Treacher-Collins syndrome: In the CD8+ T lymphocytes subpopulations (Table 3), TCS exhibited a decrease in the percentage of naïve cells (17.6% (8.3–27.1) vs 27.0% (19.8–41.1) p = 0.039) and an increased percentage of CD8+ CD45RA+ CD57+ cells (41.6% (22.2–55.6) vs 24.7% (10.1–32.2) p = 0.015).