4SC AG: 4SC Files Marketing Authorisation Application with EMA for Resminostat (Kinselby)

Planegg-Martinsried (pta006/01.03.2024/07:30) - Planegg-Martinsried, Germany, 1 March 2024 – 4SC AG (4SC, FSE Prime Standard: VSC), a biotech company improving the lives of patients suffering with advanced-stage cutaneous T-cell lymphoma (CTCL), announced today that it has filed its Marketing Authorisation Application (MAA) for resminostat (Kinselby) with the European Medicines Agency (EMA) and that its MAA has been accepted by the EMA as sufficient for examination.

In September 2023, the Company announced data from its RESMAIN study on resminostat (Kinselby) that showed:

* A statistically significant improvement in progression free survival (median PFS: 8.3 vs. 4.2 months; p=0.015; HR: 0.623)
* A median time to next treatment versus placebo showed a significant improvement of 8.8 months compared to 4.2 months
* A clinically meaningful improvement in median "total" PFS of 24.3 months, compared to 14.9 months for those in the placebo group
* Side effects of resminostat were mainly mild to moderate, manageable and reversible.

Jason Loveridge, Ph.D., CEO of 4SC, commented: "The team has worked hard to successfully file the Marketing Authorisation Application for resminostat in CTCL ahead of schedule. This represents a significant step forward for 4SC and a great achievement for our team as it further de-risks our resminostat program and will assist our ongoing efforts to bring this important treatment to patients suffering with this disease, commercialise the asset and create value for shareholders."

- Press release ends -

For further information, please contact:

4SC AG

ir-pr@4sc.com

Optimum Strategic Communications

Nick Bastin, Eleanor Cooper

Phone: +44 20 3922 0891

4SC@optimumcomms.com

About 4SC

4SC AG ( http://www.4SC.com ) is a clinical-stage biopharmaceutical company developing small-molecule drugs that target key indications in cancer with high unmet medical needs. 4SC's pipeline is protected by a comprehensive portfolio of patents and currently comprises one drug candidate in clinical development: Kinselby (resminostat).

4SC aims to generate future growth and enhance its enterprise value by entering into partnerships with pharmaceutical and biotech companies and/or the eventual marketing and sales of approved drugs in select territories by 4SC itself.

4SC is headquartered in Planegg-Martinsried near Munich, Germany. The Company had 16 employees as of 30 September 2023 and is listed on the Prime Standard of the Frankfurt Stock Exchange (FSE Prime Standard: VSC; ISIN: DE000A3E5C40).

About Kinselby (resminostat)   

Resminostat ( http://www.4sc.com/product-pipeline/resminostat/ ) is an orally administered class I, IIb and IV histone deacetylase (HDAC) inhibitor that potentially offers an approach to treating different kinds of cancer. Resminostat demonstrated that it is well tolerated and can inhibit tumor growth and proliferation, cause tumor regression, and strengthen the body's immune response to cancer. Resminostat is currently being investigated in a pivotal study in cutaneous T-cell lymphoma (CTCL) as maintenance treatment by 4SC in Europe and by Yakult Honsha in Japan.  

About cutaneous T-cell lymphoma (CTCL)   

CTCL is a rare disease with approximately 5,000 patients being newly diagnosed in Europe each year. The disease arises from malignant transformation of T-cells, a specialized subgroup of immune cells, and primarily affects the skin, but may ultimately involve lymph nodes, blood and visceral organs.  

Currently, CTCL is incurable and treatment options for advanced-stage CTCL are limited. Although patients respond to the available treatment options, the duration of response is often short-lived and declines as the severity of the disease increases. The key therapeutic challenge in advanced-stage CTCL is therefore to make remissions more durable by halting disease progression and improving patient's quality of life.  

About the RESMAIN study – resminostat for maintenance treatment of CTCL   

The pivotal RESMAIN study ( https://clinicaltrials.gov/ct2/show/NCT02953301 ) was conducted at more than 50 clinical centers in 11 European countries and Japan. It included 201 patients who suffer from advanced-stage cutaneous T-cell lymphoma (CTCL) and have achieved disease control with systemic therapy. The patients were randomized 1:1 to receive either resminostat or placebo. Patients who experienced disease progression – while being on placebo – were offered resminostat in an open label treatment arm.  

The primary goal of the study was to determine whether maintenance treatment with resminostat prolongs progression-free survival and other secondary objectives. Data demonstrating that resminostat met the primary endpoint of the RESMAIN study was published in May 2023.

About the concept of maintenance therapy   

The pivotal RESMAIN study ( https://clinicaltrials.gov/ct2/show/NCT02953301 ) is focused on patients with advanced-stage, incurable, cutaneous T-cell lymphoma (CTCL). Such patients suffer from painful and itchy skin lesions resulting in disfigurement and a severely impaired quality of life. Furthermore, lymph nodes, blood or visceral organs can be involved. The current therapeutic options rarely provide long-lasting responses or stabilization of disease for meaningful periods, with most patients progressing within a few months.

Resminostat is being evaluated as maintenance treatment - a unique innovative treatment approach in CTCL (Stadler et al., 2021) - intended to prolong the period patients are stable and not progressing.

Forward-looking information

Information set forth in this press release contains forward-looking statements, which involve risks and uncertainties. The forward-looking statements contained herein represent the judgement of 4SC as of the date of this press release. Such forward-looking statements are neither promises nor guarantees, but are subject to a variety of risks and uncertainties, many of which are beyond 4SC's control, and which could cause actual results to differ materially from those contemplated in these forward-looking statements. 4SC expressly disclaims any obligation or undertaking to release any updates or revisions to any such statements to reflect any change in its expectations or any change in events, conditions or circumstances on which any such statement is based.

(Ende)