EU/3/21/2553: Orphan designation for the treatment of spinocerebellar ataxia

Troriluzole hydrochloride

Overview
Key facts

Overview

This medicine was designated as an orphan medicine for the treatment of spinocerebellar ataxia in the European Union on 10 December 2021.

This means that the developer will receive scientific and regulatory support from EMA to advance their medicine to the stage where they can apply for a marketing authorisation.

Orphan designation does not mean the medicine is available or authorised for use. All medicines, including designated orphan medicines, must be authorised before they can be marketed and made available to patients in the EU.

During the medicine's development, doctors may be able to enrol patients in clinical trials investigating the medicine. For information on ongoing clinical trials in the EU, see:

EU Clinical Trials Register

ClinicalTrials.gov

: This medicine, also known as SPL84-23-1, is an antisense oligonucleotide medicine given by inhalation for the treatment of patients with cystic fibrosis who have a specific mutation (called 3849 +10kb C-to-T) in the gene for the CFTR protein. This mutation causes the formation of abnormal CFTR messenger ribonucleic acid (mRNA), leading to significant degradation of the mRNA as well as production of shortened non-functional CFTR proteins. SPL84-23-1 attaches to the abnormal mRNA and, by a process called splicing modulation, leads to an increase of correct mRNA transcripts and higher levels of functional CFTR proteins.

Based on description provided by sponsor

At the time of submission of the application for orphan designation:

The effects of the medicine had been evaluated in experimental models.
No clinical trials with the medicine in patients with cystic fibrosis had been started.

More information on how potential new medicines are tested during their development is available on Authorisation of medicines.

Medicines intended for rare diseases can be granted an orphan designation during their development.

The orphan designation allows the developer to benefit from:

scientific and regulatory support to advance their medicine to the stage where they can request marketing authorisation;
market exclusivity once the medicine is on the market.

To qualify for orphan designation, a medicine must meet a number of criteria:

it must be intended for the treatment, prevention or diagnosis of a disease that is life-threatening or chronically debilitating;
the prevalence of the condition in the EU must not be more than 5 in 10,000 or it must be unlikely that marketing of the medicine would generate sufficient returns to justify the investment needed for its development;
there are no satisfactory alternative methods for the diagnosis, prevention or treatment of the condition or, if such a method exists, the medicine is of significant benefit to those affected by the condition.

EMA's Committee for Orphan Medicinal Products (COMP) is responsible for issuing opinions on applications for orphan designations.

The Agency sends the COMP opinion to the European Commission, which is responsible for granting the orphan designation. The full list of orphan designations is available in the Community register of orphan medicinal products for human use.

For more information, see:

Key facts

Active substance	Troriluzole hydrochloride
Intended use	Treatment of spinocerebellar ataxia
Orphan designation status	Positive
EU designation number	EU/3/21/2553
Date of designation	10/12/2021
Sponsor	Biohaven Bioscience Ireland Limited 6th Floor South Bank House Barrow Street Dublin 4 D04 TR29 Ireland Email: medinfo@biohavenpharma.com

Update history

Date	Update
May 2023	The sponsorship was transferred from Biohaven Pharmaceutical Ireland DAC, Ireland to Biohaven Bioscience Ireland Limited, Ireland.

Documents related to this orphan designation evaluation

Minutes of the COMP meeting on 3 - 5 November 2021 (PDF/468.9 KB)

Adopted

First published: 21/01/2022
EMA/COMP/647448/2021

Patients' organisations

For contact details of patients’ organisations whose activities are targeted at rare diseases, see:

European Organisation for Rare Diseases (EURORDIS), a non-governmental alliance of patient organisations and individuals active in the field of rare diseases.
Orphanet, a database containing information on rare diseases, which includes a directory of patients’ organisations registered in Europe.

EU register of orphan medicines

The list of medicines that have received an orphan designation in the EU is available on the European Commission's website:

European Commission: Community Register of orphan medicinal products