MCDecoded: Unlocking Conversations About Mast Cell Diseases
Because its symptoms can be invisible, mast cell diseases (MCDs) like systemic mastocytosis (SM) can be hard to fully explain.1
These conditions can:
- Be difficult to live with
- Be challenging for others to understand (including healthcare teams or those closest to you)
- Lead to feeling misunderstood—and sometimes even dismissed
What is MCDecoded?
A resource to help you communicate with people you trust and “decode” the experience of living with MCD.
We can help:
- Foster confidence to share your story
- Turn confusion into clarity
- Turn isolation into genuine connection
Our goal is to help you feel empowered to advocate for yourself and feel confident connecting with a support network where your experiences, needs, and expectations are truly heard.
Jenna
Living with mast cell activation syndrome (MCAS)
“Don't let anyone tell you that what you're experiencing is not real.”
Rachell
Living with systemic mastocytosis (SM)
“Be clear about what you need. Advocating for yourself the first time is the hardest. But the more you do it, the easier it becomes.”
Whether it’s new ways to explain your symptoms or building your support community, we are here to help you on the journey of decoding MCD conversations.
MCDecoded Live: building your community
Watch a panel with community voices and The Mast Cell Disease Society, who discuss ways to develop meaningful support systems while living with MCD, and be sure to check back in for future webinars.
All panel participants were compensated by Blueprint Medicines, a Sanofi company, to share their experiences.
This panel was recorded live on December 10, 2025.
Community voices
Marinda
Living with systemic mastocytosis (SM)
Content is not intended to provide medical advice. Always consult with your doctor for medical advice.
These individuals were compensated by Blueprint Medicines, a Sanofi company.
We gathered tips for having meaningful conversations from leading community voices living with MCD.
Download tipsSupport and information
Finding support and information is an important part of living with a mast cell disease. Here you’ll find articles and resources from organizations that may help you connect, learn, and share your experiences openly and honestly.
The Mast Cell Disease Society:
Allergy & Asthma Network:
These independent resources are included as a reference only and do not imply endorsement of Blueprint Medicines or its products by the groups listed. Blueprint Medicines is not affiliated with and does not endorse any particular independent advocacy group. We make no guarantees about the accuracy of the information provided on these websites or the quality of support provided.
Connect with the SM Community
Find valuable SM resources and learn how others are navigating life with SM.
Connect with others- Mesa RA, et al. Cancer. 2022;128(19):3691-3699.
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