--- title: "Mesenchymal Stem Cells for Crohn's Fistulas: Research Update" date: 2026-02-10T13:52:00-05:00 author: Jairah Said canonical_url: "https://www.americordblood.com/articles/mesenchymal-stem-cells-for-crohns-fistulas-research-update" section: Articles --- ![Screenshot 2026 02 10 at 12 53 41 PM](https://assets.americordblood.com/transforms/blogs/4753716/Screenshot-2026-02-10-at-12.53.41-PM_dcd4b851eab0fdc82c7554dc6e8ca81c.png) [ Treatments & Clinical Trials ](https://www.americordblood.com/articles/treatments-clinical-trials) 3 Min Read # Mesenchymal Stem Cells for Crohn's Fistulas: Research Update Crohn's disease often leads to fistulas, painful and complex complications that are tough to treat. Traditional therapies like antibiotics, immunosuppressants, biologics, and surgeries have limited success, with healing rates around 30% and frequent complications. [Mesenchymal stem cells (MSCs)](https://www.americordblood.com/articles/the-difference-between-hematopoietic-and-mesenchymal-stem-cells) offer a new treatment option by reducing inflammation and promoting tissue repair. Clinical trials show MSC therapies achieve remission rates of **57.9% at six months** and **52% at one year**, surpassing traditional methods. Key findings: - **Adipose-derived MSCs** are preferred for their ease of collection and high yield. - **Darvadstrocel (Alofisel)**, the first approved MSC therapy, showed a 51.5% remission rate at 24 weeks but faced setbacks due to limited efficacy in later trials. - **Umbilical cord-derived MSCs** are emerging as a promising alternative due to their non-invasive collection and high potency. Safety data indicates MSC therapies are well-tolerated, with minimal adverse effects. [Stem cell banking](https://www.americordblood.com/articles/the-future-of-medicine-why-lifetime-storage-makes-sense-now-more-than-ever) is becoming essential to ensure timely access to treatments. MSCs represent an evolving approach, offering hope for patients with refractory Crohn's fistulas. ![MSC Therapy Success Rates for Crohn's Fistulas: Clinical Outcomes and Comparison](https://assets.seobotai.com/undefined/698488bb0bb6b48a410e4151-1770294916753.jpg) MSC Therapy Success Rates for Crohn's Fistulas: Clinical Outcomes and Comparison ## Recent Research on MSC Therapies for Crohn's Fistulas A 2025 meta-analysis of 25 studies, involving 596 patients, revealed that mesenchymal stem cell (MSC) therapies show the highest remission rates at six months. Combined remission rates were **36.2% at 3 months**, **57.9% at 6 months**, and **52% at 12 months**. Clinical healing was sustained in **54% of patients for up to three years** (156 weeks). MRI-based scoring systems, such as MAGNIFI-CD ≤6, are now being used to predict long-term success more effectively than relying solely on clinical closure. Below is a closer look at findings related to adipose-derived, darvadstrocel, and umbilical cord-derived MSC therapies. ### Adipose-Derived MSCs in Clinical Trials Adipose-derived MSCs are often preferred due to their ease of collection via liposuction and their significantly higher yield - 100 to 500 times greater - compared to bone marrow-derived cells. According to the 2025 meta-analysis, adipose-derived MSCs achieved a **57.2% remission rate at 6 months**, compared to **55.7%** for bone marrow-derived cells, with no statistically significant difference between the two. ### Darvadstrocel (Cx601) Clinical Development Darvadstrocel, sold under the name Alofisel, became the **first allogeneic MSC therapy** to gain regulatory approval. The pivotal ADMIRE trial demonstrated a **51.5% combined remission rate at 24 weeks**, compared to **35.6% for placebo**. > "Darvadstrocel is a safe, minimally invasive surgical technique without significant perioperative complications. Clinical success can be expected in about half of the treated patients." ### Umbilical Cord-Derived MSCs in Development Research is shifting toward cell-free derivatives, such as extracellular vesicles and exosomes, derived from umbilical cord MSCs. These derivatives retain the therapeutic properties of MSCs while eliminating the logistical hurdles associated with live cell therapies. ## MSC Sources and Delivery Methods Compared For delivery, **local injection directly into the fistula tract** has become the preferred approach. This method ensures that the MSCs are applied precisely where they are needed. ### Comparison Table: MSC Sources and Delivery Methods MSC Source Delivery Method Remission Rate Adipose (Allogeneic) Local Injection 49.5% Bone Marrow (Allogeneic) Local Injection 80% ## Safety Data and Patient Outcomes MSC therapies have shown to be both safe and well-tolerated. Most reported adverse events are procedural, such as **anal pain** and **perianal abscess formation**. ## Stem Cell Banking and Regenerative Medicine Stem cell banking involves preserving cells at birth for potential future use. Research indicates that MSCs collected from individuals with active inflammation might have **weakened properties**, making banked cells from healthy sources highly valuable. ## FAQs ### Why are umbilical cord-derived MSCs promising? They regulate the immune system and support tissue repair with a low risk of rejection, offering a high regenerative potential for complex cases. *The views, statements, and pricing expressed are deemed reliable as of the published date. Articles may not reflect current pricing, offerings, or recent innovations.* ### Essential Family Plan The easiest and simplest way to invest in the health of your new baby. [ View Service ](https://www.americordblood.com/essential-family-plan) ### Simple, Straight Forward Pricing At Americord, we provide the highest-quality stem cell processing and the lowest storage rates in the industry. Discover which payment plan is best for you! [ View Service ](https://www.americordblood.com/pricing) ### Be the First to Know Never miss the latest cord blood breakthrough, clinical trial, or stem cell education to keep your family healthy for life. 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[ Read More ](https://www.americordblood.com/articles/stem-cell-drug-testing) [ ![A paper folded pink elephant.](https://assets.americordblood.com/transforms/default/2203/pink-elephant_41a4f2ed037c5ad51696884668d44cc6.jpg) ](https://www.americordblood.com/articles/delayed-cord-clamping-a-guide-to-research-and-options) [### Delayed Cord Clamping: A Guide to Research and Options ](https://www.americordblood.com/articles/delayed-cord-clamping-a-guide-to-research-and-options)This guide gives you everything you need to know about delayed cord clamping all in one place: the what, the how, and most importantly, the why. [ Read More ](https://www.americordblood.com/articles/delayed-cord-clamping-a-guide-to-research-and-options)