The landscape of autologous Advanced Therapy Medicinal Products (ATMPs) manufacturing is growing: new products are entering the market and Point-of-Care manufacturing (PoC) could play a significant role to bring them closer to patients. PoC manufacturing refers to the process of producing therapies at or near the location where they will be administered to patients. ATMPs demand highly GMP regulated manufacturing processes, specific skills, and infrastructures. One product batch is often linked to an individual patient, meaning that a scale out model might be more appropriate than a scale-up one. In the attempt to bring therapies closer to patients, PoC manufacturing for autologous ATMPs is emerging in clinical settings as a potential solution to enable faster treatment initiation and improve access to ATMPs for those in need.1-3
This article explores if Point-of-Care manufacturing for autologous ATMPs in the European Union (EU) can represent a third viable business model in addition to central and regional manufacturing.
This article explores if Point-of-Care manufacturing for autologous ATMPs in the European Union (EU) can represent a third viable business model in addition to central and regional manufacturing.
Advanced therapy medicinal products (ATMPs) are a category of medicinal products for human use, that include Gene Therapy Medicinal Products (GTMPs), Somatic-cell Therapy Medicinal Products (sCTMPs), Tissue-engineered Products (TEP) and Combined Advanced Therapy Medicinal Products (cATMPs) .4
Cell and gene based ATMPs are often referred to as Cell and Gene Therapies (CGTs), and they have experienced significant growth (>2700 of developers and >1600 clinical trials around the world and new products being approved between the US and EU markets every year) due to their potential to address conditions like severe immune system diseases, hematological cancers, and genetic disorders.5,6 There are two categories for CGTs: autologous and allogeneic. Autologous CGTs require the collection of cells from the patient, followed by genetic manipulation outside the body to introduce therapeutic genes or correct genetic defects, and subsequent infusion of the modified cells back into the same patient. Allogeneic CGTs are, instead, a type of therapy where cells or tissues are collected from a healthy donor which will then be genetically modified in a laboratory to introduce therapeutic genes or correct genetic defects. Subsequently, they are expanded and administered to treat patients (Figure 1). Both allogeneic and autologous products are based on temperature and time sensitive human material. Furthermore, in the case of autologous therapies, cells or tissue come from patients that have gone through multiple rounds of conventional therapies (e.g., chemotherapy, radiation therapy, etc.), hence the quantity and quality of patient materials might represent an additional constraint.
Figure 1. Allogeneic and Autologous Cell & Gene Therapies. Allogeneic and Autologous Cell and Gene Therapies are performed ex vivo. For autologous CGTs, cells are collected from the patients themselves, genetically modified and returned to the same patients. For allogeneic CGTs, cells are collected from a healthy donor, genetically modified and returned to the patient.
To date, autologous CGTs have mainly been manufactured in centralized sites, where patient material is delivered from hospitals (either fresh or cryopreserved) to the manufacturing site.7 The final product is then transported back (cryopreserved or fresh) to the hospitals, where it will be administered to the patient (Figure 2a). Preserving and transporting patient cells from hospitals to manufacturing centers, safely returning modified cells to patients, and ensuring CoI and CoC (Chain of Identity and Chain of Custody) add considerable time constraints and complexity to the end-to-end supply chain.1
Figure 2a. Centralized Manufacturing. Centralized manufacturing of cell and gene therapies starts with sample collection from the patient in the hospital/clinical center. The cryopreserved or fresh material travels via interfacility and interdepartmental transport to the central manufacturing facility. Final products are then again cryopreserved or freshly stored and transported back to the clinical center where they will be administered to the patient.
The adoption of PoC manufacturing, is being investigated as a potential way to face the constraints and complexities of the current traditional manufacturing approach. PoC manufacturing is based on the ability to produce therapies either directly within the hospital itself or at a nearby manufacturing unit. This approach results in a faster therapy administration, and it eliminates the need for complex transportation from a centralized facility to the patient's location. With PoC manufacturing units in place, there could be a reduced need for cell cryopreservation, lowering, for example, the risk of affecting cells viability every time a product is frozen or experiences sudden changes of temperature (Figure 2b).
Figure 2b. Point-of-Care manufacturing. PoC manufacturing starts with sample collection from the patient in the hospital/clinical center. The material gets transported to a nearby manufacturing facility (or can also be manufactured in the hospital itself), and then the final product gets transported back to the clinical center where it will be administered to the patient.
In the next section we present seven dimensions and some related key considerations to reflect upon when choosing to implement Point-of-Care manufacturing.
The decision to opt for a specific manufacturing approach needs to be carefully evaluated by the Sponsor/Marketing Authorization Holder (MAH). At one end, there is a fully centralized manufacturing approach (one manufacturing facility serving worldwide), while on the other one, we have complete decentralization (manufacturing facilities placed directly in the treatment centers) (figure 3). However, between these two extremes, the level of decentralization can be tailored to adapt PoC manufacturing to specific circumstances.
Figure 3. Key Considerations. High level overview of the selected seven dimensions with some examples of key items to consider when considering either central manufacturing (CM) or Point of Care manufacturing (PoC). The list is not exhaustive and has only an illustrative purpose
In the world of CGT manufacturing, there is no one-size-fits-all. The PoC manufacturing model is complementing the centralized and regional ones and sponsors have already started to look into it for clinical manufacturing. Thanks to the new emerging technologies streamlining and ensuring quality in every process, PoC manufacturing could further grow in the upcoming years, bringing the possibility to reach more patients faster. However, there are questions that need to be addressed before moving towards PoC, for example, what will be the roles and responsibilities of the different entities involved in the manufacturing processes? What are the capabilities required to implement PoC manufacturing? Should there be additional regulatory guidance on a national level?
Despite the numerous challenges, there are some good practices that should be considered for PoC manufacturing: