nearly significantp = 0.059
23 95%CI 0–62; HR 2.339, 95%CI 1.159–4.719, p = 0.018), while former good histologic response to primary chemotherapy (necrosis ≥ 90%) showed a nearly significant correlation with improved survival [median OS 19 (95%CI 15–22) vs. 13 months (95%CI 9–17); HR 0.527 (95%CI 0.271–1.025), p = 0.059].