JAK1 and neoplasm: The deleted regions contained the tumour suppressors CDKN2C, SDHB, and SFPQ in 1p and CDKN2A in 9p in metastatic samples and the tumour suppressors BCL10 and NOTCH2 and the oncogenes JAK1 and NRAS in 1p in the non‐metastatic sample group (Data S2).