GPR183 and hepatocellular carcinoma: GPR183 phosphopeptides were detected in both BrCa and HCC cohorts and were correlated with GPR183 transcript in all cases: Spearman Rho for GPR183:S343 in BrCa = 0.60 (p = 3.8 × 10−6, N = 49, Figure 3B); and Spearman Rho in HCC for GPR183:S343 = 0.39 (p = 1.6 × 10−9, N = 212), for GPR183:S328=0.49 (p = 1.6 × 10−15, N = 232), for GPR183:S333 = 0.46 (p = 4.8 × 10−14, N = 232), and for GPR183:S337 = 0.49 (p = 8.0 × 10−20, N = 298).