Clinical Practice Guidelines for Pancreatic Cancer 2019 From the Japan Pancreas Society

Methods: For this version, we developed the new guidelines according to the Minds Manual for Guideline Development 2017, which includes the concepts of GRADE (Grading Recommendations Assessment, Development, and Evaluation), to enable a better understanding of the current guidelines.Results: The guidelines show algorithms for the diagnosis, treatment, and chemotherapy of pancreatic cancer and address 7 subjects: diagnosis, surgical therapy, adjuvant therapy, radiation therapy, chemotherapy, stent therapy, and supportive and palliative medicine. They include 56 clinical questions and 84 statements. There are statements corresponding to clinical questions, evidence levels, recommendation strengths, and agreement rates.Conclusions: These guidelines represent the most standard clinical and practical management guidelines at this time in Japan. This is the English synopsis of the Clinical Practice Guidelines for Pancreatic Cancer 2019 in Japanese and is an attempt to disseminate the Japanese guidelines worldwide for introducing the Japanese approach for clinical management of pancreatic cancer.
the Japanese guidelines worldwide, for introducing the Japanese approach for the clinical management of pancreatic cancer.

## General outline of the revision process
The committee for Revision of the Clinical Guidelines for Pancreatic Cancer in the JPS consisted of Takuji Okusaka as chairman; Masafumi Nakamura as the vice-chairman; Masahiro Yoshida, Masayuki Kitano, Katsuhiko Uesaka, Yoshinori Ito, Junji Furuse, and Keiji Hanada as the chiefs of each of the groups; and 41 other specialists (medical doctors specialized in internal medicine, surgery, gastroenterology, medical oncology, radiology, endoscopy, psychooncology, nutrition, palliative and supportive medicine, a nurse specialized in cancer therapeutics, a cancer pharmacist, medical social workers, and a patient representative with pancreatic cancer) as committee members for the revision of the guidelines. In addition, 43 other specialists helped in the revision as assistants. The revision process with these committee members began in July 2017.
These new guidelines have the support of Prof Masahiro Yoshida, Mr Yosuke Hatakeyama, and Mr Sho Sasaki from Minds, under the special support program contracted by Minds and JPS. The committee members proposed the guidelines consisting of algorithms for the diagnosis , treatment , and chemotherapy [fig_ref] FIGURE 3: Algorithm for chemotherapy of pancreatic cancer [/fig_ref] of pancreatic cancer, and the general consensuses including those for uncontroversial "background questions" and well-established recommendations for diagnosis, surgical therapy, adjuvant therapy, radiotherapy, chemotherapy, stent therapy, and supportive and palliative therapy of pancreatic cancer, and the particular discussions consisting of "clinical questions (CQs)" and recommendations. A comprehensive search of the literature for the latest articles published after January 1990 (the year in which the literature search was performed for the first version of the guidelines) was performed for each CQ by a librarian (Mr Naohiko Yamaguchi). A total of 1014 articles were collected from 12,274 reports concerning pancreatic cancer that were listed on PubMed and Igaku Chuo Zasshi (ICHUSHI), a Japanese bibliographic database, from . Algorithm for the diagnosis of pancreatic cancer. *It is desirable for endoscopic ultrasonography (EUS) to be performed at an institution where a high level of skill for EUS is available.  The diagnosis must be established by histopathology as much as possible.  Dynamic computed tomography (CT), dynamic magnetic resonance imaging (MRI), EUS, positron emission tomography (PET), and/or laparoscopic examination should be performed as needed. ERCP, endoscopic retrograde cholangiopancreatography; MRCP, magnetic resonance cholangiopancreatography.

## Figure 2.
Algorithm for the treatment of pancreatic cancer. Cancer stage classification and resectability classification are based on the General Rules for the Study of Pancreatic Cancer, Seventh Edition, the JPS. 10 *Supportive care for pain, digestion and absorption disorders, pancreatic diabetes, and anxiety is required even from the early stages after diagnosis in patients with pancreatic cancer. For further details, refer to the guidelines or the homepage of the Japanese Society for Palliative Medicine (http://www.jspm.ne.jp/guidelines/index.html).  Stent therapy, bypass therapy, radiotherapy, supportive and palliative medicine, and/or surgical therapy are recommended according to individual patients' conditions. January 1990 to October 2017. The guidelines address particular discussions including the 6 subjects pertaining to the diagnosis of pancreatic cancer (15 CQs and 15 statements), treatment of resectable disease (13 CQs and 16 statements), treatment of borderline resectable disease (3 CQs and 5 statements), treatment of locally advanced disease (9 CQs and 17 statements), treatment of metastatic disease (6 CQs and 17 statements), and supportive and palliative medicine (10 CQs and 14 statements). The corresponding CQ numbers are inserted in the algorithms. There are statements corresponding to the CQs, with the evidence levels, recommendation strengths, and agreement rates.
We used the Minds manual following the GRADE system approach. The overall quality of the body of evidence across gross studies for each important outcome was assessed. The evidence level was graded on a scale of A (strongest) to D (least strong). Each committee member specialized in the subject of each CQ prepared a draft of the statement, the evidence level, and the recommended strength. Committee members added some references from their own searches and performed meta-analyses independently as necessary. These were then reviewed, modified, and finalized by all committee members. The recommended strength was decided considering 4 factors: evidence level, balance of benefits and harms/burdens, patients' preferences, and cost benefits. Finally, the recommendation strengths were divided into 5 categories (1 = strong, recommend adoption on the approach, 2 = weak, propose adoption on the approach, 3 = weak, propose not to adopt the approach, 4 = strong, recommend against adoption of the approach, 5 = no recommendation) consensus of the attending committee members when at least 67% of the members attended. When the total agreement rate with recommendation of adopting or not adopting the approach was 50% or more and the total rate of agreement with the opposite view was less than 20%, the recommendation supported by 50% or more members was accepted by the committee. When the agreement rate with the recommendation of adopting or not adopting the approach was 70% or more, the strong recommendation was accepted by the committee members. If the voting results did not fulfill any of the aforementioned criteria, the committee members held discussions again, and a final voting was held. Nonfulfillment of the above criteria in the final voting led to the decision of "no recommendation." Acceptability was determined by voting using an answer pad system by the committee members who attended.
To improve and confirm the validity of the guidelines, they were released in a draft form on the JPS website, inviting comments from the public. Simultaneously, they were reviewed by 2 external appraisal committees independently using AGREE Reporting
Checklists: a group assigned by the JPS that consisted of surgeons (Koji Yamaguchi, Shuji Isaji, and Shoji Natsugoe), gastroenterologists (Hiroyuki Maguchi and Kazuma Fujimoto), an epidemiologist (Takeo Nakayama) and a patient representative with pancreatic cancer, and another group assigned by Minds, including specialists in guidelines methodology (Eiji Ishikawa, Hiroshi Okamoto, Hiroshi Koga, and Nobumasa Takagaki), independent of the revision committee members. Finally, taking into account the comments from the public and the external reviewers, the guidelines were reviewed and modified again by the revision committee members and finalized. These new Clinical Guidelines for Pancreatic Cancer 2019 8 follow the new General Rules for the Study of Pancreatic Cancer published by the JPS in July 2016.

## Notes on the use of the guidelines
These guidelines represent the most standard guidelines for clinical and practical care of patients with pancreatic cancer available at this time. However, they should not be used inflexibly for the practical management of individual patients. The JPS is responsible for the statements in these guidelines. The JPS and the committee members are not liable for any consequences arising from any treatment, for which individual physicians involved in the treatment are responsible.

## Algorithms
The algorithms present the flow for diagnosis, treatment, and chemotherapy of pancreatic cancer. For detailed explanation of each CQ, please refer to the indicated box (Figs. 1-3).

## I. diagnosis

## Diagnosis or d
A. Detection or D DD1-1 Is ultrasonography recommended as a diagnostic method in subjects with suspected pancreatic cancer? Statement:
Ultrasonography is recommended as a diagnostic tool in subjects with suspected pancreatic cancer.
Recommendation strength: weak; evidence level: C; agreement rates (N = 39): 1 = 10%, 2 = 77%, 3 = 10%, 4 = 0%, 5 = 3%* (*N = number of voters; 1 = strong, recommend adoption of the approach; 2 = propose adoption of the approach; 3 = propose not to adopt the approach; 4 = strong, recommend against adoption of the approach; 5 = no recommendation) DD1-2 Is contrast-enhanced computed tomography (CT) recommended as a diagnostic method in subjects with suspected pancreatic cancer? Statement:
Contrast-enhanced CT (multidetector-row CT [MDCT] is desirable) is recommended as a diagnostic tool in subjects with suspected pancreatic cancer.
Recommendation strength: strong; evidence level: B; agreement rates (N = 40): 1 = 100%, 2 = 0%, 3 = 0%, 4 = 0%, 5 = 0% DD1-3 Is abdominal magnetic resonance imaging (MRI) recommended as a diagnostic method in subjects with suspected pancreatic cancer? Statement:
Abdominal MRI is recommended as a diagnostic tool in subjects with suspected pancreatic cancer.
Recommendation strength: weak; evidence level: C; agreement rates (N = 39): 1 = 10%, 2 = 90%, 3 = 0%, 4 = 0%, 5 = 0% DD1-4 Is endoscopic ultrasonography (EUS) recommended as a diagnostic method in subjects with suspected pancreatic cancer? Statement:
Endoscopic ultrasonography is recommended as a diagnostic tool in subjects with suspected pancreatic cancer, because it is more sensitive than other imaging modalities for the diagnosis of pancreatic cancer. However, the indication for EUS should be carefully determined, because it is a relatively invasive procedure.
Recommendation strength: weak; evidence level: C; agreement rates (N = 39): 1 = 3%, 2 = 97%, 3 = 0%, 4 = 0%, 5 = 0% DD2-1 Is endoscopic retrograde cholangiopancreatography recommended as the next step in the diagnosis of pancreatic cancer? Statement:
Endoscopic retrograde cholangiopancreatography is recommended for the diagnosis of pancreatic duct stenosis, which is difficult to differentiate from inflammatory lesions by other imaging modalities, or of pancreatic duct stenosis, which could be a manifestation of early pancreatic cancer.
Recommendation strength: weak; evidence level: C; agreement rates (N = 38): 1 = 8%, 2 = 92%, 3 = 0%, 4 = 0%, 5 = 0% DD2-2 Is positron emission tomography (PET) recommended as the next step in the diagnosis of pancreatic cancer? Statement:
Positron emission tomography is not recommended as the next step in the diagnosis of pancreatic cancer.
Recommendation strength: weak; evidence level: C; agreement rates (N = 39): 1 = 0%, 2 = 13%, 3 = 72%, 4 = 3%, 5 = 13% DD3-1 Are cytology and histology recommended as definitive diagnostic procedures for pancreatic cancer? Statement:
Cytological and histological examinations are recommended for the diagnosis of pancreatic cancer, as they have been shown to exhibit high sensitivity and specificity for the diagnosis of pancreatic cancer.
Recommendation strength: weak; evidence level: C; agreement rates (N = 39): 1 = 41%, 2 = 56%, 3 = 0%, 4 = 0%, 5 = 3% DD3-2 In subjects presenting with a mass lesion in the pancreas, is EUS fine-needle aspiration recommended as a diagnostic procedure? Statement:
Endoscopic ultrasonography fine-needle aspiration is recommended for the histopathological diagnosis of pancreatic masses, because it has been shown to exhibit a high sensitivity and specificity for the diagnosis and is useful for differentiating pancreatic cancer from other pancreatic masses.
Recommendation strength: weak; evidence level: B; agreement rates (N = 37): 1 = 19%, 2 = 78%, 3 = 0%, 4 = 0%, 5 = 3% DD3-3 Is pancreatic fluid cytology via endoscopic retrograde cholangiopancreatography recommended in patients with abnormal pancreatic duct findings, but no mass lesions? Statement:
Endoscopic retrograde cholangiopancreatography with pancreatic fluid cytology is recommended in patients with abnormal pancreatic duct findings, but no mass lesions. However, particular attention should be paid to the possible development of acute pancreatitis precipitated by endoscopic retrograde cholangiopancreatography.
Recommendation strength: weak; evidence level: D; agreement rates (N = 36): 1 = 6%, 2 = 92%, 3 = 0%, 4 = 0%, 5 = 3%

## B. staging or sg
DSg1-1 Is contrast-enhanced MDCT recommended for the staging of pancreatic cancer and for assessment of its resectability? Statement:
Contrast-enhanced CT (MDCT is desirable) is recommended for the staging of pancreatic cancer and for assessment of its resectability.
Recommendation strength: strong; evidence level: B; agreement rates (N = 35): 1 = 97%, 2 = 3%, 3 = 0%, 4 = 0%, 5 = 0% DSg1-2 Is abdominal MRI recommended for the staging of pancreatic cancer and for assessment of its resectability? Statement:
Performance of contrast-enhanced MRI for the staging pancreatic cancer and for assessment of its resectability.
Recommendation strength: weak; evidence level: C; agreement rates (N = 39): 1 = 3%, 2 = 90%, 3 = 3%, 4 = 0%, 5 = 5% DSg1-3 Is EUS recommended for the staging of pancreatic cancer and for assessment of its resectability? Statement:
When contrast-enhanced CT cannot definitively determine the disease stage/resectability, addition of EUS is recommended, because EUS is better than contrast-enhanced CT for diagnosing T-factor/vascular invasion.
Recommendation strength: weak; evidence level: C; agreement rates (N = 36): 1 = 6%, 2 = 86%, 3 = 3%, 4 = 0%, 5 = 6% DSg1-4 Is PET recommended for the staging of pancreatic cancer? Statement:
Positron emission tomography is recommended in patients with suspected distant metastasis, as PET is more specific than CT for the diagnosis of distant metastasis.
Recommendation strength: weak; evidence level: C; agreement rates (N = 37): 1 = 5%, 2 = 89%, 3 = 3%, 4 = 0%, 5 = 3% DSg1-5 Is staging laparoscopy recommended for the staging of pancreatic cancer and for assessment of its resectability? Statement:
When surgery is planned, but distant metastasis such as peritoneal dissemination cannot be ruled out, staging laparoscopy is recommended, because staging laparoscopy is useful for evaluating the presence/absence of hepatic micrometastases on the surface of the liver and peritoneal dissemination.
Recommendation strength: weak; evidence level: C; agreement rates (N = 37): 1 = 3%, 2 = 81%, 3 = 11%, 4 = 0%, 5 = 5%
DSg2 Is preoperative assessment of nutrition and body composition (muscle and fat mass) along with blood biochemical tests recommended in patients with pancreatic cancer?

# Statement:
Assessment of the preoperative nutritional status and body composition is recommended, because these variables have been shown to contribute to prediction of the long-term prognosis and postoperative complications in patients undergoing surgery for pancreatic cancer.
Recommendation strength: weak; evidence level: C; agreement rates (N = 39): 1 = 5%, 2 = 92%, 3 = 0%, 4 = 0%, 5 = 3% II. Treatment

## Treatment of resectable disease or r
A. Operation or O RO1 Is surgical treatment for pancreatic cancer recommended at a facility with a large volume of surgical cases? Statement:
Surgical treatment for pancreatic cancer is recommended in a high-volume facility.
Recommendation strength: weak; evidence level: B; agreement rates (N = 39): 1 = 49%, 2 = 51%, 3 = 0%, 4 = 0%, 5 = 0% RO2 Is surgical treatment recommended for pancreatic cancer patients with positive peritoneal lavage cytology? Statement:
It is not clear whether surgical treatment is indicated for pancreatic cancer patients with positive peritoneal lavage cytology.
Recommendation strength: no recommendation; evidence level: D; agreement rates (N = 39): 1 = 3%, 2 = 5%, 3 = 5%, 4 = 3%, 5 = 85% RO3 Is combined portal vein resection recommended in patients with pancreatic cancer? Statement:
It is not clear whether combined portal vein resection for pancreatic cancer would improve the prognosis in patients with pancreatic cancer. When R0 resection is expected, combined portal vein resection is recommended.
Recommendation strength: weak; evidence level: D; agreement rates (N = 39): 1 = 31%, 2 = 69%, 3 = 0%, 4 = 0%, 5 = 0% RO4 Is prophylactic extended lymph node and nerve plexus dissection recommended in patients with pancreatic cancer? Statement:
Prophylactic extended lymph node and nerve plexus dissection is not recommended for patients with pancreatic cancer, because it has been shown to not contribute to improvement of the survival.
Recommendation strength: strong; evidence level: B; agreement rates (N = 39): 1 = 0%, 2 = 0%, 3 = 18%, 4 = 82%, 5 = 0% RO5 Is laparoscopic pancreaticoduodenectomy recommended for patients with invasive ductal carcinoma who are candidates for pancreaticoduodenectomy? Statement:
Laparoscopic pancreaticoduodenectomy has been reported to be associated with less intraoperative blood loss, a lower perioperative transfusion rate, a shorter length of hospital stay, and a longer recurrence-free survival as compared to open pancreaticoduodenectomy. However, these data have been obtained only from observational studies of operations performed at high-volume facilities for low-grade lesions, and it is still not clear whether the laparoscopic surgical approach is appropriate for patients with pancreatic cancer. Furthermore, it should be borne in mind that laparoscopic pancreaticoduodenectomy is not covered by health insurance in Japan. Based on the above, we conclude that while laparoscopic pancreaticoduodenectomy may be performed in clinical studies, this surgical approach is still not recommended in clinical practice in Japan.
Recommendation strength: weak; evidence level: D; agreement rates (N = 39): 1 = 0%, 2 = 0%, 3 = 72%, 4 = 18%, 5 = 10% RO6 Is laparoscopic distal pancreatectomy recommended for patients with invasive ductal carcinoma who are candidates for distal pancreatectomy? Statement:
Laparoscopic distal pancreatectomy may be beneficial. However, it should only be performed in patients without multiple organ invasion who do not require combined vascular resection, at facilities specializing in the treatment of pancreatic cancer.
Recommendation strength: weak; evidence level: D; agreement rates (N = 38): 1 = 0%, 2 = 79%, 3 = 11%, 4 = 3%, 5 = 8% RO7 Is long-term regular surveillance recommended after surgical resection for pancreatic cancer? Statement:
Continued regular long-term surveillance is recommended even in patients surviving for more than 5 years after resection of pancreatic cancer.
Recommendation strength: weak; evidence level: D; agreement rates (N = 39): 1 = 21%, 2 = 74%, 3 = 3%, 4 = 0%, 5 = 3%
RO8 Is perioperative nutrition therapy (enteral nutrition therapy) recommended after surgical resection for pancreatic cancer? Statement:
Perioperative nutrition therapy (enteral nutrition therapy) is not recommended after surgical resection for pancreatic cancer.
Recommendation strength: weak; evidence level: C; agreement rates (N = 38): 1 = 0%, 2 = 16%, 3 = 55%, 4 = 0%, 5 = 29% RO9 Is surgical treatment recommended for elderly patients with pancreatic cancer 80 years or older? Statement:
Surgical treatment may be considered for elderly patients with pancreatic cancer 80 years or older if they wish to undergo the surgery and their general condition allows it. However, evidence for this recommendation is insufficient, and results of future studies are awaited.
Recommendation strength: weak; evidence level: D; agreement rates (N = 38): 1 = 3%, 2 = 92%, 3 = 0%, 4 = 0%, 5 = 5% RO10 Is total pancreatectomy recommended to achieve R0 resection in patients with pancreatic cancer? Statement:
Total pancreatectomy is recommended to achieve R0 resection in patients with pancreatic cancer.
Recommendation strength: weak; evidence level: C; agreement rates (N = 38): 1 = 24%, 2 = 76%, 3 = 0%, 4 = 0%, 5 = 0%

## B. adjuvant or a
RA1 Is neoadjuvant therapy recommended for patients with resectable pancreatic cancer? Statement:
Combined gemcitabine + S-1 therapy is recommended as neoadjuvant therapy in patients with resectable pancreatic cancer.
Recommendation strength: weak; evidence level: C; agreement rates (N = 31): 1 = 0%, 2 = 90%, 3 = 0%, 4 = 0%, 5 = 10% RA2 Is adjuvant chemoradiotherapy recommended for patients with pancreatic cancer? Statement:
Adjuvant chemoradiotherapy is not recommended for patients with pancreatic cancer.
Recommendation strength: weak; evidence level: B; agreement rates (N = 41): 1 = 0%, 2 = 0%, 3 = 100%, 4 = 0%, 5 = 0% RA3 Is adjuvant chemotherapy recommended in patients with pancreatic cancer? Statement:
1. Adjuvant chemotherapy is recommended in patients with pancreatic cancer treated by macroscopic radical resection.
Recommendation strength: strong; evidence level: A; agreement rates (N = 38): 1 = 95%, 2 = 5%, 3 = 0%, 4 = 0%, 5 = 0% 2. S-1 monotherapy is recommended as an adjuvant chemotherapeutic agent in patients with pancreatic cancer.
Recommendation strength: strong; evidence level: A; agreement rates (N = 31): 1 = 87%, 2 = 13%, 3 = 0%, 4 = 0%, 5 = 0% 3. Gemcitabine hydrochloride monotherapy is recommended for patients with poor tolerance to S-1.
Recommendation strength: strong; evidence level: A; agreement rates (N = 36): 1 = 78%, 2 = 19%, 3 = 3%, 4 = 0%, 5 = 0% 4. Combined gemcitabine hydrochloride + capecitabine therapy (not covered by health insurance) and modified fluorouracil, leucovorin, irinotecan, and oxaliplatin (modified FOLFIRINOX) therapy (not covered by health insurance) are recommended for patients with pancreatic cancer, based on the results of phase III studies conducted outside Japan.
Combined gemcitabine hydrochloride + capecitabine therapy Recommendation strength: weak; evidence level: A; agreement rates (N = 36): 1 = 0%, 2 = 69%, 3 = 8%, 4 = 0%, 5 = 22%
Modified FOLFIRINOX Therapy Recommendation strength: weak; evidence level: A; agreement rates (N = 34): 1 = 0%, 2 = 74%, 3 = 3%, 4 = 3%, 5 = 21%

## Treatment of borderline resectable disease or b
B1 Is surgical treatment recommended for patients with borderline resectable pancreatic cancer? Statement:
In patients with borderline resectable pancreatic cancer, it is recommended that a reassessment of the therapeutic efficacy be performed after neoadjuvant therapy, prior to surgery, in order to determine whether the cancer can be curatively resected.
Recommendation strength: weak; evidence level: C; agreement rates (N = 38): 1 = 8%, 2 = 89%, 3 = 0%, 4 = 0%, 5 = 3% B2 Is combined arterial resection recommended in patients with pancreatic cancer? Statement:
1. Distal pancreatectomy with celiac artery resection is recommended.
Recommendation strength: weak; evidence level: D; agreement rates (N = 38): 1 = 3%, 2 = 92%, 3 = 0%, 4 = 0%, 5 = 5% 2. Combined resection of the hepatic artery is recommended.
Recommendation strength: weak; evidence level: D; agreement rates (N = 39): 1 = 0%, 2 = 87%, 3 = 0%, 4 = 0%, 5 = 13% 3. Combined resection of the superior mesenteric artery is not recommended.
Recommendation strength: weak; evidence level: D; agreement rates (N = 39): 1 = 0%, 2 = 3%, 3 = 79%, 4 = 15%, 5 = 3% B3 Is adjuvant chemotherapy recommended for patients with borderline resectable pancreatic cancer? Statement:
Adjuvant chemotherapy is recommended for patients with borderline resectable pancreatic cancer.
Recommendation strength: weak; evidence level: C; agreement rates (N = 39): 1 = 8%, 2 = 92%, 3 = 0%, 4 = 0%, 5 = 0%

## Treatment of locally advanced disease or l
L1 What is the first-line treatment recommended for patients with locally advanced, unresectable pancreatic cancer? Statement:
As first-line treatment for locally advanced, unresectable pancreatic cancer, 1. Chemoradiotherapy is recommended.
Recommendation strength: weak; evidence level: B; agreement rates (N = 39): 1 = 46%, 2 = 51%, 3 = 3%, 4 = 0%, 5 = 0% 2. Chemotherapy alone is recommended. Recommendation strength: weak; evidence level: B; agreement rates (N = 39): 1 = 56%, 2 = 44%, 3 = 0%, 4 = 0%, 5 = 0%
A. Radiation or R LR1 What is the chemoradiotherapy regimen recommended for patients with locally advanced, unresectable pancreatic cancer? Statement:
1. For locally advanced, unresectable pancreatic cancer patients scheduled to receive chemoradiotherapy, concurrent use of fluoropyrimidine with radiotherapy is recommended.
Recommendation strength: weak; evidence level: C; agreement rates (N = 38): 1 = 53%, 2 = 47%, 3 = 0%, 4 = 0%, 5 = 0% 2. For patients with locally advanced, unresectable pancreatic cancer patients scheduled to receive chemoradiotherapy, concurrent use of gemcitabine hydrochloride with radiotherapy is recommended.
Recommendation strength: weak; evidence level: C; agreement rates (N = 40): 1 = 33%, 2 = 65%, 3 = 3%, 4 = 0%, 5 = 0% LR2 Is elective nodal irradiation for regional lymph nodes recommended in radiotherapy for locally advanced, unresectable pancreatic cancer patients? Statement:
In patients with locally advanced, unresectable pancreatic cancer scheduled to receive radiotherapy, elective nodal irradiation for the para-aortic lymph nodes is not recommended.
Recommendation strength: weak; evidence level: D; agreement rates (N = 31): 1 = 0%, 2 = 0%, 3 = 100%, 4 = 0%, 5 = 0% LR3 Is induction chemotherapy recommended prior to chemoradiotherapy for patients with locally advanced, unresectable pancreatic cancer? Statement:
Induction chemotherapy is not recommended prior to chemoradiotherapy in patients with locally advanced, unresectable pancreatic cancer.
Recommendation strength: weak; evidence level: C; agreement rates (N = 37): 1 = 0%, 2 = 14%, 3 = 76%, 4 = 3%, 5 = 8%
LR4 Are radiotherapy and chemoradiotherapy recommended for locally advanced, unresectable pancreatic cancer patients with local symptoms such as pain? Statement:
Radiotherapy or chemoradiotherapy is recommended for patients with locally advanced, unresectable pancreatic cancer with local symptoms such as pain.
Recommendation strength: weak; evidence level: C; agreement rates (N = 39): 1 = 0%, 2 = 95%, 3 = 0%, 4 = 0%, 5 = 5% SSp2 Are non-opioid analgesics, opioid analgesics, adjuvant analgesics, and nerve blocks recommended for pancreatic cancer patients with upper abdominal/back pain? Statement:
1. Pain treatment with a nonopioid/opioid analgesic(s) is recommended.
Recommendation strength: strong; evidence level: B; agreement rates (N = 35): 1 = 89%, 2 = 11%, 3 = 0%, 4 = 0%, 5 = 0% 2. When sufficient pain relief is not obtained despite increase of the dose of the opioid analgesic(s) within an acceptable range, concurrent use of adjuvant analgesics is recommended.
Recommendation strength: weak; evidence level: C; agreement rates (N = 35): 1 = 9%, 2 = 89%, 3 = 0%, 4 = 0%, 5 = 3%
3. Celiac nerve block may be performed as one of the treatment options.
Recommendation strength: weak; evidence level: A; agreement rates (N = 35): 1 = 0%, 2 = 94%, 3 = 0%, 4 = 0%, 5 = 6%
SSp3 Is exercise therapy recommended after surgery in patients with pancreatic cancer? Statement:
Exercise therapy is recommended after surgery in patients with pancreatic cancer.
Recommendation strength: weak; evidence level: C; agreement rates (N = 35): 1 = 3%, 2 = 97%, 3 = 0%, 4 = 0%, 5 = 0%
SSp4 Is advance care planning recommended for patients with advanced pancreatic cancer? Statement:
Advance care planning is recommended for patients with advanced pancreatic cancer.
Recommendation strength: weak; evidence level: C; agreement rates (N = 36): 1 = 3%, 2 = 97%, 3 = 0%, 4 = 0%, 5 = 0%
SSp5 Are pregabalin and duloxetine recommended for peripheral neuropathy caused by FOLFIRINOX therapy or gemcitabine hydrochloride + nab-paclitaxel combination therapy in patients with pancreatic cancer? Statement:
1. Use of duloxetine is recommended for peripheral neuropathy associated with FOLFIRINOX therapy or combined gemcitabine hydrochloride + nab-paclitaxel therapy in patients with pancreatic cancer.
Recommendation strength: weak; evidence level: C; agreement rates (N = 34): 1 = 0%, 2 = 76%, 3 = 6%, 4 = 0%, 5 = 18% 2. Use of pregabalin may be considered for peripheral neuropathy associated with FOLFIRINOX therapy or combined gemcitabine hydrochloride + nab-paclitaxel therapy in patients with pancreatic cancer.
Recommendation strength: weak; evidence level: D; agreement rates (N = 34): 1 = 0%, 2 = 62%, 3 = 6%, 4 = 0%, 5 = 32%

## Committee members
[fig] FIGURE 3: Algorithm for chemotherapy of pancreatic cancer. The recommendation strengths/evidence levels are given in parentheses. *MM-398 is not covered by health insurance in Japan. GEM indicates gemcitabine; nab-PTX, nab-paclitaxel; FF, fluorouracil + calcium folinate. [/fig]