Advance Therapy Medicinal Products (ATMP) definitions

Advance Therapy Medicinal Products (ATMPs) are medicinal products which are prepared industrially or manufactured by a method involving an industrial process. ATMPs fall into three categories; Gene Therapies, Somatic Cell Therapies and Tissue Engineered Products.

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Gene therapies refers to products obtained through a set of manufacturing processes aimed at the transfer, to be performed either in vivo or ex vivo, of a prophylactic, diagnostic or therapeutic gene (i.e. a piece of nucleic acid), to human / animal cells and its subsequent expression in vivo. The gene transfer involves an expression system contained in a delivery system known as a vector, which can be of viral, as well as non-viral origin. The vector can also be included in a human or animal cell.

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Gene therapies

Somatic Cell therapies include the use in humans of autologous (coming from the patient himself), allogeneic (coming from another human being) or xenogeneic (coming from animals) somatic living cells, the biological characteristics of which have been substantially altered as a result of their manipulation to obtain a therapeutic, diagnostic or preventive effect through metabolic, pharmacological and immunological means. This manipulation includes the expansion or activation of autologous cell populations ex vivo, the use of allogeneic and xenogeneic cells associated with medical devices used ex vivo or in vivo.

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Somatic cell therapies

Tissue engineered products are products that contain or consist of engineered cells or tissues, and is presented as having properties for, or is used in or administered to human beings with a view to regenerating, repairing or replacing a human tissue. A tissue engineered product may contain cells or tissues of human or animal origin, or both. The cells or tissues may be viable or non-viable. It may also contain additional substances, such as cellular products, bio-molecules, biomaterials, chemical substances, scaffolds or matrices.

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Tissue engineered products

Yes. Products containing or consisting exclusively of non-viable human or animal cells and / or tissues that do not contain any viable cells or tissues and that do not act principally by pharmacological, immunological or metabolic action, shall be excluded from the definition of Tissue Engineered Products.

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Do Tissue Engineered Products have to contain living cells?

Engineered Cells or tissues are considered as engineered if they are not intended to be used for the same essential function or functions in the recipient as in the donor. Alternatively, cells or tissues are considered ‘engineered’ if they have been subject to substantial manipulation so that biological characteristics, physiological functions or structural properties relevant for the intended regeneration, repair or replacement are achieved (not including cutting, grinding, shaping, centrifugation, soaking in antibiotic or antimicrobial solutions, sterilization, irradiation, cell separation, concentration or purification, filtering, lyophilisation, freezing, cryopreservation or vitrification)

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Engineered cells

A Combination ATMP incorporates as an integral part of the product, one or more medical devices or implantable medical devices as well as a cells or tissue component. The cells or tissue component of the product must contain viable cells or the non-viable cell or tissue component of the product must be liable to act on the human body with action that can be considered as primary to that of the device.

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Combination ATMP

Using a one off formulation or a formulation that has been tailored to the individual patient and prepared within the same hospital.

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‘Custom made’

An industrial process would generally take place in an external facility and not within the same hospital.

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‘Industrial process’
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