
While last week saw a relative slowdown in new guideline releases, this week delivers a strong resurgence across multiple organizations and clinical areas. From hematologic malignancies to gynecologic procedures and rare infectious disease vaccine safety, the updates span a wide range of disciplinesโeach carrying meaningful clinical implications.
Of particular note are major revisions from NCCN in pediatric and adult hematologic cancers, ASCOโs first dedicated guideline on symptom management in GEP-NETs, and a new ACOG consensus on in-office pain management. We also spotlight the FDA/CDCโs joint safety communication on Ixchiq, and a global harmonization effort in the management of gestational trophoblastic disease.
If there are any guidelines I have missed this week that you would like to see possibly included in future updates, please email me at jerm@day-storms.com. You can check out earlier updates here.
National Cancer Comprehensive Network (NCCN)
The NCCN guidelines can be found at www.nccn.org.
Acute Lymphoblastic Leukemia Version 1.2025
The new 2025 NCCN guidelines for acute lymphoblastic leukemia (ALL) introduce several substantive updates across diagnostic criteria, risk stratification, treatment, and supportive care. Notable revisions include new classifications for hypodiploidy and near triploidy under poor-risk cytogenetics. WHO and ICC criteria have been integrated for ALL subtype classification. Treatment algorithms for Ph+ and Phโ B-ALL and T-ALL were extensively revised, particularly incorporating blinatumomab across MRD-positive and MRD-negative settings, and refining TKI-based strategies. In supportive care, guidance was added for managing hypofibrinogenemia and asparaginase-associated adverse events. The role of PET/CT has been emphasized in suspected lymphomatous involvement. MRD interpretation has been further nuanced, with additional specificity on timing, methods, and implications for HCT. Collectively, these updates reflect evolving precision in genomic stratification, tailored therapy, and toxicity mitigation.
Pediatric Hodgkin Lymphoma Version 1.2025
Key updates in the most recent guidelines include alignment with WHO 2022 and ICC 2022 classifications, with NLPHL being replaced with nodular lymphocyte predominant B-cell lymphoma (NLPBL) based on the ICC 2022 update. Major restructuring occurred in treatment algorithms for all stages, notably with added guidance for growth factor support and integration of novel regimens such as nivolumab-AVD and BrECADD. Response-adapted radiation criteria were updated to incorporate Deauville scores and early metabolic responses. The principles of systemic and radiation therapy were refined, and a new supportive care section (PHL-G) was added. Importantly, surveillance FDG-PET imaging is now explicitly “discouraged” (rather than not recommended) due to false-positive risks.
Thymomas and Thymic Carcinomas Version 2.2025
The NCCN has updated their discussion section to better align with algorithm changes.
American Society of Clinical Oncology (ASCO)
The 2025 ASCO guideline on well-differentiated gastroenteropancreatic neuroendocrine tumors (GEP-NETs) introduces the first comprehensive framework dedicated specifically to symptom management in patients with well-differentiated (G1โG3) metastatic GEP-NETs. While prior guidelines focused primarily on tumor control, this update emphasizes treatment algorithms for carcinoid syndrome, functional pancreatic NETs (e.g., insulinoma, VIPoma), and carcinoid heart disease. Novel recommendations include dose-escalation strategies for somatostatin analogs (SSAs), integration of telotristat ethyl, and criteria for peptide receptor radionuclide therapy (PRRT) for refractory symptoms. Liver-directed therapies and thermal ablation are prioritized for symptom palliation, with specific guidance on embolization techniques. The guideline also discourages the use of everolimus for symptom relief alone, though it may be used for tumor control. Additionally, tailored recommendations are provided for perioperative prophylaxis in carcinoid crisis, insulin management in insulinoma, and end-of-life symptom palliation. This marks a major shift toward individualized, symptom-focused management with attention to quality of life and functional burden.
FDA/CDC
This month, the FDA and CDC issued a joint statement recommending a pause in use of the chikungunya vaccine, Ixchiq, due to postmarketing reports of serious cardiac and neurologic adverse events in individuals 60 years of age and older. At least 17 serious adverse events, including two deaths, have occurred as of May 7, 2025. The FDA had approved Ixchiq, a live vaccine, on November 9, 2023.
American College of Obstetricians and Gynecologists (ACOG)
The new ACOG Clinical Consensus introduces a comprehensive, evidence-informed approach to pain management during in-office gynecologic procedures, addressing longstanding gaps in provider awareness and patient autonomy. This is the first document to consolidate pharmacologic and nonpharmacologic strategies across procedures such as IUD insertion, endometrial biopsy, hysteroscopy, cervical biopsy, and uterine aspiration. Notably, the guideline emphasizes the importance of shared decision-making, culturally competent care, trauma-informed approaches, and anticipatory guidance. It includes detailed consensus recommendations stratified by procedure type, with updated evidence tables covering lidocaine sprays, NSAIDs, misoprostol, paracervical blocks, and topical anesthetics. The guideline also highlights the limited utility of opioids and anxiolytics for pain control and calls for more racially, ethnically, and gender-diverse research.
EOTTD/ESGO/GCIG/ISSTD
The 2025 consensus guideline by the European Organisation for the Treatment of Trophoblastic Disease (EOTTD), the European Society of Gynaecologic Oncology (ESGO), the Gynecologic Cancer InterGroup (GCIG), and the International Society for the Study of Trophoblastic Diseases (ISSTD) represents the first globally harmonized recommendations for the diagnosis, management, and follow-up of gestational trophoblastic disease (GTD), addressing longstanding disparities in international practice. Key updates include nine standardized definitions and the establishment of minimum criteria for GTD referral centers, applicable even in low-resource settings. The guideline introduces 18 comprehensive flow diagrams stratified by diagnostic and therapeutic pathways for hydatidiform mole, GTN (including low-/high-/ultrahigh-risk), PSTT, ETT, and APSN. Novel recommendations include structured evaluation of unexplained low-level hCG, indications for second curettage, use of avelumab in methotrexate-resistant GTN, and refined imaging protocols (favoring MRI over CT in certain scenarios). Updated thresholds for initiating multiagent chemotherapy and a greater emphasis on early cross-disciplinary consultation reflect a shift toward earlier risk-adapted interventions. Fertility preservation, post-treatment follow-up, and recurrence management are addressed in greater detail, integrating recent evidence and expert consensus.
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Jerm Day-Storms, PhD, MWC
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