AHRR and neoplasm: The median AHRR protein expression in the tumour cells in primary samples was 104.15 (H-score, range: 0.28–212,13, Supplementary Table 9) but 13.43 (H-score, range: 0–182.92) in the recurrences, showing a significantly higher AHRR expression in the tumour cells within the primary HGSOC group (n = 39 pairs, Wilcoxon p < 0.0001, Fig. 3c, d).