NCCN Guidelines® Insights - Systemic Mastocytosis, Version 3.2024

Mastocytosis is a heterogeneous group of disorders comprising cutaneous mastocytosis, systemic mastocytosis, and mast cell sarcoma. It is associated with a variety of symptoms related to the release of mast cell mediators and mast cell tissue infiltration. Referral to specialized centers with expertise in the management of mastocytosis and multidisciplinary collaboration with subspecialists (eg, allergists for the management of anaphylaxis and drug hypersensitivities, anesthesiologists for invasive procedures or surgery, high-risk obstetrician for pregnancy) is recommended. The NCCN Guidelines for Systemic Mastocytosis provide evidence- and consensus-based recommendations for the diagnosis and comprehensive care of patients with systemic mastocytosis. The multidisciplinary panel of experts convenes at least once a year to review requested changes to the guidelines from both internal and external entities as well as to discuss data on existing and new therapies. These NCCN Guidelines Insights focus on some of the recent updates to the guidelines.

Target Audience

This journal article is designed to meet the educational needs of oncologists, nurses, pharmacists, and other health care professionals who manage patients with cancer.

Learning Objectives

Upon completion of this activity, participants will be able to:

  • Integrate into professional practice the updates to NCCN Guidelines for systemic mastocytosis.
  • Describe the rationale behind the decision-making process for developing the NCCN Guidelines for systemic mastocytosis.
Additional information

This activity is supported by educational grants from AstraZeneca; Bristol Myers Squibb; Janssen Biotech, Inc., administered by Janssen Scientific Affairs, LLC; and Seagen. This activity is supported by a medical education grant from Exelixis, Inc. This activity is supported by an independent educational grant from Merck & Co., Inc., Rahway, NJ, USA.

Course summary
Available credit: 
  • 1.00 AAPA Category 1 CME credit
  • 1.00 ACPE contact hours
  • 1.00 AMA PRA Category 1 Credit™
  • 1.00 ANCC contact hours
  • 1.00 Participation
Course opens: 
Course expires: 

NCCN Continuing Education Disclosure Policy
It is the policy of NCCN that all planners, faculty, moderators, authors, reviewers and anyone involved in the planning and delivery of NCCN continuing education activities are expected to disclose ALL financial relationships they have had in the past 24 months with ineligible companies. The ACCME Standards for Integrity and Independence require that individuals who refuse to provide this information will be disqualified from involvement in the planning and implementation of accredited continuing education presented by NCCN. NCCN identifies, mitigates and discloses to learners all relevant financial relationships.

In addition, all content has been reviewed to ensure education promotes safe, effective patient care and does not promote the products or services of an ineligible company. Content, including any presentation of therapeutic options, is fair, balanced, evidence-based, scientifically accurate, and free of commercial bias and marketing. 


Ineligible Company: An ineligible company is any entity whose primary business is producing, marketing, selling, re-selling, or distributing healthcare products used by or on patients. 

Relevant Financial Relationships: Financial relationships of any dollar amount occurring within the past 24 months are defined as relevant if the educational content an individual can control is related to the business lines or products of an ineligible company. There is no minimum financial threshold. We ask for disclosure of ALL financial relationships with ineligible companies, regardless of the amount and regardless of the potential relevance of each relationship to the education.

Faculty Disclaimers  

All faculty for this continuing education activity are competent in the subject matter and qualified by experience, training, and/or preparation for the tasks and methods of delivery.

Faculty presentations may include discussion of off-label use. Faculty will disclose that the use in question is not currently approved by the FDA per the product labeling or marketing.

Individuals Who Provided Content Development and/or Authorship Assistance

The faculty listed below have no relevant financial relationship(s) with ineligible companies to disclose.

Mary Anne Bergman, Guidelines Coordinator, NCCN
Cindy Hochstetler, PhD, Oncology Scientist/Medical Writer, NCCN

The faculty listed below have the following relevant financial relationship(s) with ineligible companies to disclose. All of the relevant financial relationships listed for these individuals have been mitigated.

Jason Gotlib, MD, MS, Panel Vice Chair, has disclosed receiving grant/research support from AbbVie, Inc., Blueprint Medicines, Bristol Myers Squibb, Cogent Biosciences, Incyte Corporation, Merck & Co., Inc., Protagonist Therapeutics, Inc., and Telios Pharma, Inc.; and receiving honoraria from AbbVie, Inc., Blueprint Medicines, Cogent Biosciences, Inctye Corporation, and Protagonist Therapeutics.
Aaron T. Gerds, MD, MS, Panel Chair, has disclosed serving as a consultant for AbbVie, Inc., GSK, Kartos Therapuetics, Inc., and MorphoSys AG.

View all of the conflicts of interest for the NCCN Guidelines panel

NCCN Staff Disclosures

None of the other planners for this educational activity have relevant financial relationship(s) to disclose with ineligible companies whose primary business is producing, marketing, selling, reselling, or distributing healthcare products used by or on patients.

In support of improving patient care, National Comprehensive Cancer Network (NCCN) is jointly accredited by the Accreditation Council for Continuing Medical Education (ACCME), the Accreditation Council for Pharmacy Education (ACPE), and the American Nurses Credentialing Center (ANCC), to provide continuing education for the healthcare team.

NCCN designates this journal-based CME activity for a maximum of 1.0 AMA PRA Category 1 Credit™. Physicians should claim only the credit commensurate with the extent of their participation in the activity.

NCCN designates this educational activity for a maximum of 1.0 contact hour. 

NCCN designates this knowledge-based continuing education activity for 1.0 contact hour (0.1 CEUs) of continuing education credit. UAN: JA4008196-0000-24-007-H01-P

Physician Assistants
NCCN has been authorized by the American Academy of PAs (AAPA) to award AAPA Category 1 CME credit for activities planned in accordance with AAPA CME Criteria. This activity is designated for 1.0 AAPA Category 1 CME credit. Approval is valid until June 10, 2025. PAs should only claim credit commensurate with the extent of their participation.

Available Credit

  • 1.00 AAPA Category 1 CME credit
  • 1.00 ACPE contact hours
  • 1.00 AMA PRA Category 1 Credit™
  • 1.00 ANCC contact hours
  • 1.00 Participation


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Required Hardware/software

To access this activity, users will need:

  • A device with an Internet connection
  • Adobe Reader or other PDF reader software for article and certificate viewing/printing