The number of subjects in each study
| Cytokines | Number of participants in each study | Number of studies |
| IFN-γ | Wu16 (71), Jeong17 (53), Clifford18 (81), Kim19 (50), Wang20 (62), Pathakumari21 (74), Zhang23 (71), La Manna24 (59) | 8 |
| TNF-α | Won8 (51), Suzukawa10 (60), Wu16 (71), Clifford18 (81), Kim19 (50), Pathakumari21 (74), Hur22 (83) | 7 |
| IP-10 | Suzukawa10 (60), Wu16 (71), Jeong17 (53), Clifford18 (81), Kim19 (50), Wang20 (62), La Manna24 (59), You25 (80), Yao26 (35), Wang27 (139) | 10 |
| IL-2 | Suzukawa10 (60), Wu16 (71), Clifford18 (81), La Manna24 (59), You 25 (80), Wang27 (139) | 6 |
| IL-10 | Won8 (51), Suzukawa10 (60), Wu16 (71), You25 (80) | 4 |
| IL-12 | Suzukawa10 (60), Wang20 (62), Pathakumari21 (74), La Manna24 (59) | 4 |
| VEGF | Won8 (51), Suzukawa10 (60), Wang20 (62), Yao26 (35) | 4 |