Consequently, we took the same approach and calculated the ratios of representative peaks with one another [peaks at cm−1]: 1641/1537, 2926/1641, 2926/1537, 1070/1239, 3277/1537, 3277/1641, and 1641/1239 for the BCP-ALL group; as well as corresponding to the peak area ratios in the control group: 1645/1538, 2924/1645, 2924/1538, 1071/1241, 3278/1538, 3278/1645, and 1645/1241. This evidence concerns the gene OPN1SW and acute lymphoblastic leukemia.