(A) Block clustering limited to the T-cell ALL samples enabled recognition of 6 protein constellations (horizontally) and 3 protein signatures (vertically). The annotation bar shows patient characteristics for ethnicity and suggests ethnicity-associated constellations. (B) Proteins with significantly higher or significantly lower protein expression levels relative to normal CD34+ cells within T-ALL constellation 3 (enriched for Hispanic ethnicity) and constellation 5 (enriched for non-Hispanic ethnicity) are shown. Proteins in constellation 3 were predominantly involved in PFG “Cell Cycle”, “FLI1” and “IAP-Apoptosis” and proteins in constellation 5 were involved PFG “BH3 Apoptosis”, “Cell Cycle”, “FLI1”, “IAP-Apoptosis” and “MEK”. Colors reflect the relative median expression within that specific constellation, ranged from the lowest (dark blue) to relatively normal (cyan-green-yellow) to the highest (maroon) expression.