Eran van Veldhuisen1, Jantien A Vogel1, Sjors Klompmaker1, Olivier R Busch1, Hanneke W M van Laarhoven2, Krijn P van Lienden3, Johanna W Wilmink2, Hendrik A Marsman1, Marc G Besselink4. 1. Department of Surgery, Cancer Center Amsterdam, Academic Medical Center, Meibergdreef 9, 1100DD, Amsterdam, The Netherlands. 2. Department of Medical Oncology, Cancer Center Amsterdam, Academic Medical Center, Meibergdreef 9, 1100DD, Amsterdam, The Netherlands. 3. Department of Radiology, Cancer Center Amsterdam, Academic Medical Center, Meibergdreef 9, 1100DD, Amsterdam, The Netherlands. 4. Department of Surgery, Cancer Center Amsterdam, Academic Medical Center, Meibergdreef 9, 1100DD, Amsterdam, The Netherlands. Electronic address: m.g.besselink@amc.nl.
Abstract
BACKGROUND: Determining the resectability of locally advanced pancreatic cancer (LAPC) after induction chemotherapy is complex since CT-imaging cannot accurately portray tumor response. We hypothesized that CA19-9 response adds to RECIST-staging in predicting resectability of LAPC. METHODS: Post-hoc analysis within a prospective study on LAPC (>90° arterial or >270° venous involvement). CA19-9 response was determined after induction chemotherapy. Surgical exploration was performed in RECIST-stable or -regressive disease. The relation between CA19-9 response, resectability and survival was assessed. RESULTS: Restaging in 54 patients with LAPC after induction chemotherapy (mostly FOLFIRINOX) identified 6 RECIST-regressive, 32 RECIST-stable, and 16 patients with RECIST-progressive disease. The resection rate was 20.3% (11/54 patients). Sensitivity and specificity of RECIST-regression for resection were 40% and 87% whereas the positive predictive value (PPV) and negative predictive value (NPV) were 67% and 68%. Using a 30% decrease of CA19-9 as cut-off, 9/10 patients were correctly classified as resectable (90% sensitivity, PPV 43%) and 3/15 as unresectable (20% specificity, NPV 75%). In the total cohort, a CA19-9 decrease ≥30% was associated with improved survival (22.4 vs. 12.7 months, p = 0.02). CONCLUSION: Adding CA19-9 response after induction chemotherapy seems useful in determining which patients with RECIST non-progressive LAPC should undergo exploratory surgery.
BACKGROUND: Determining the resectability of locally advanced pancreatic cancer (LAPC) after induction chemotherapy is complex since CT-imaging cannot accurately portray tumor response. We hypothesized that CA19-9 response adds to RECIST-staging in predicting resectability of LAPC. METHODS: Post-hoc analysis within a prospective study on LAPC (>90° arterial or >270° venous involvement). CA19-9 response was determined after induction chemotherapy. Surgical exploration was performed in RECIST-stable or -regressive disease. The relation between CA19-9 response, resectability and survival was assessed. RESULTS: Restaging in 54 patients with LAPC after induction chemotherapy (mostly FOLFIRINOX) identified 6 RECIST-regressive, 32 RECIST-stable, and 16 patients with RECIST-progressive disease. The resection rate was 20.3% (11/54 patients). Sensitivity and specificity of RECIST-regression for resection were 40% and 87% whereas the positive predictive value (PPV) and negative predictive value (NPV) were 67% and 68%. Using a 30% decrease of CA19-9 as cut-off, 9/10 patients were correctly classified as resectable (90% sensitivity, PPV 43%) and 3/15 as unresectable (20% specificity, NPV 75%). In the total cohort, a CA19-9 decrease ≥30% was associated with improved survival (22.4 vs. 12.7 months, p = 0.02). CONCLUSION: Adding CA19-9 response after induction chemotherapy seems useful in determining which patients with RECIST non-progressive LAPC should undergo exploratory surgery.
Authors: Georgios Gemenetzis; Alex B Blair; Minako Nagai; William R Burns; Christopher L Wolfgang; Jin He; Vincent P Groot; Ding Ding; Ammar A Javed; Richard A Burkhart; Elliot K Fishman; Ralph H Hruban; Matthew J Weiss; John L Cameron; Amol Narang; Daniel Laheru; Kelly Lafaro; Joseph M Herman; Lei Zheng Journal: Ann Surg Oncol Date: 2021-08-27 Impact factor: 5.344
Authors: J Bart Rose; Alicia M Edwards; Flavio G Rocha; Carolyn Clark; Adnan A Alseidi; Thomas R Biehl; Bruce S Lin; Vincent J Picozzi; W Scott Helton Journal: Oncologist Date: 2020-04-27 Impact factor: 5.837