Treatment-Resistant Depression

T r e a t i n g
Depression

Ketabon – accessing ketamine’s
antidepressant potential

We develop a potential take-at-home treatment option for the 320 million patients suffering from Depression globally.

KET01 is an oral prolonged-release formulation of ketamine. It combines the robust and rapid efficacy of ketamine with superior tolerability, patient convenience, and accessibility compared to current treatment options. It therefore has the potential to be the first rapid-acting antidepressant as adjunctive therapy for Major Depressive Disorder (MDD) and/ or Treatment-Resistant Depression (TRD).

A growing burden
on patients and society

More and more people are suffering from neuropsychiatric disorders, globally. Especially burdensome for patients and society is Depression, having immense societal and economic costs which currently are not addressed adequately.

Depression stands out as the most prevalent mental health disease. With more than 320 million patients, MDD is the leading contributor to disability globally. One in three MDD patients fail to remit after multiple lines of treatment, meeting the criteria for Treatment-Resistant Depression (TRD).

Treatment-Resistant Depression has even greater economic and societal cost than non-TRD depression. Patients with TRD have a worse clinical perspective as the illness comes with more comorbidities, poorer health-related quality of life, and a greater risk of suicide.

The current treatment landscape leaves many patients facing significant challenges. The slow onset of efficacy with conventional antidepressants means full therapeutic benefits are often not achieved until 4–6 weeks into treatment. This delay can prolong suffering and increase the burden on both patients and healthcare providers.

This high and growing burden on patients and society calls for a rapidly efficacious, safe and well tolerated treatment for Depression.

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Mental Disorders Man Mental Disorders Woman
TRD
MDD

Mental Disorders

MENTAL DISORDERS 970 MIO
MDD 320 MIO
TRD 94 MIO

according to WHO

Pfeil
Ket01
as Full-Circle
Treatment
Option

Treating
Depression

Ketabon aims to unlock ketamine’s full antidepressant potential while at the same time substantially limiting its side effects. We are developing an oral prolonged release formulation of ketamine (KET01) that has the potential to overcome the drawbacks of other ketamine formulations.

KET01 has the potential to

  • Improve tolerability thanks to limited acute side effects, i.e., placebo-level dissociative and cardiovascular effects.
  • improve patient convenience and potentially compliance with its take-at-home treatment potential.
  • Increase accessibility for patients who cannot accommodate to have regular clinic visits.
  • Provide cost savings of ketamine treatment with full reimbursement.

The program’s IP protection provides exclusivity in the U.S. and Europe until 2039.

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Arguably the greatest breakthrough
in the field of depression in
over 60 years

Ketamine is known to have significant antidepressant potential. Its rapid antidepressant effects in TRD-patients especially through intravenous infusions are well studied. Patients describe improvement of depressive symptoms within a matter of hours, which last up to one week. While efficacious, currently applied ketamine treatments including intranasal esketamine come with several limitations.

  • Dissociative and cardiovascular side effects limit tolerability.
  • Need for strict medical supervision restricts patient convenience and ties up scarce resources of medical staff.
  • Limited number of practitioners offering ketamine treatment reduces accessibility.
  • High costs and expenditure of time for patients, clinics and society reduces usability.

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“The discovery of the rapid, efficacious, and sustained effects of ketamine is arguably the greatest breakthrough in the field of depression in over 60 years.”

KOL, Yale University School of Medicine

“Finally, since a long-time I am feeling some emotions again. A lot of positive and some negative emotions, but the negative ones enable me to interact more with my psychotherapy. Overall, it gives me a much better outlook on my future and depressive symptoms.”

TRD patient, KET01 Phase 2 study

“Esketamine gained approval, but I think there are a number of problems with it. It's very expensive and there are issues with how you deliver it.”

KOL, MDD Market Survey, March 2021

“You need to find an at-home way of administering this, removing the hallucinogenic properties to make it more accessible to the broader population – that’s your blue sky.”

Forbes, June 23, 2021

Change the future of
Depression Treatment with us

We are always open to new partners and fellow pioneers to share our vision of transforming the way we treat Depression. Join us today or contact us for more information.

HMNC Team

About
Ketabon

Ketabon is a joint venture between HMNC Brain Health and Develco Pharma. The company is developing an oral prolonged-release formulation of ketamine for Major Depressive Disorder and Treatment-Resistant Depression. This innovative formulation aims to combine the rapid onset of efficacy of ketamine with enhanced tolerability and convenience, addressing key limitations of existing treatments. By minimizing dissociative and cardiovascular side effects through its unique pharmacokinetic profile, Ketabon offers a safer alternative to intravenous and intranasal ketamine therapies. Unlike current options that require strict medical supervision, this formulation has demonstrated potential for safe, unsupervised administration in clinical trials. With an estimated 320 million people suffering from Depression globally, and 94 million thereof being treatment resistant, the demand for rapid and effective solutions is critical. Ketabon’s oral prolonged-release ketamine has the potential to be used as adjunctive treatment during the first weeks of treatment with a conventional antidepressant. It also holds promise for synergistic efficacy when combined with conventional antidepressants, potentially offering a transformative solution for long-term treatment. Clinical development of oral prolonged-release ketamine could potentially be expanded into other indications.

Markus Zimmer

Dr. Markus Zimmer
Co-CEO

Maximilian Döbler

Dr. Maximilian Döbler
Co-CEO

Hans Eriksson

Dr. Hans Eriksson
CMO

Potential rapid-acting
treatment option

The clinical data in TRD to date strongly suggest KET01 as a potential rapid-acting treatment option for Depression. The early read-out from a Proof-of-Concept investigator-initiated clinical trial in 27 TRD patients reaffirmed KET01’s efficacy and tolerability potential.

The trial suggests a positive trend in efficacy, based on the primary endpoint clinical data: After 15 days, the highest dose of 240 mg/day KET01 was associated with a clinically meaningful improvement in depressive symptoms on the Montgomery-Åsberg Depression Rating Scale (MADRS) compared with placebo (Δ=-4.99, p=0.1499). In addition, KET01 appears to be a safe and well-tolerated antidepressant, with substantially limited dissociative side effects, and scores on the Clinician-Administered Dissociative States Scale (CADSS) similar to those for placebo. Additionally, the data suggest KET01 has a rapid onset of action, with a clinically meaningful improvement of -5.67 units (95%CI: -12.57, 1.23, p=0.1062) already after seven days compared with placebo.

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Improvement in severity of depressive symptoms (Δ =4.99, p=0.150 on MADRS score), after 2 weeks of daily treatment with study medication
Improvement in
mean MADRS score,
Day 15
15 10 5 0
Placebo
Ket-01
160 MG/Day
Ket-01
240 MG/Day

Phase 2 trial

Based on the promising results from the Proof-of-Concept trial, we initiated a multicenter, double-blind, randomized, placebo-controlled Phase 2 trial in Germany, the Czech Republic and Poland. The study investigated the efficacy, safety, and tolerability of add-on treatment with ketamine hydrochloride prolonged-release tablets (KET01) in patients suffering from Treatment-Resistant Depression.

The trial enrolled 117 TRD patients at approximately 36 clinical sites. Patients were randomized into three treatment groups and received either a placebo, KET01 120 mg, or KET01 240 mg once daily (OD), in addition to their ongoing standard antidepressant treatment over a period of three weeks. The primary endpoint was the change on the established Montgomery–Åsberg Depression Rating Scale (MADRS) for depressive severity at day 21 compared to placebo.

The study confirmed the results of the previous trial, showing early-onset of efficacy with clinically relevant and statistically significant improvement on MADRS from placebo at Day 4 (ΔMADRS -3.66, p=0.0199) and Week 1 (ΔMADRS -3.95, p=0.0416) with 240mg. While statistical significance was not achieved at day 21, initial improvement was maintained during the 4-week follow-up period. Placebo-level dissociative side effects and excellent tolerability further support the take-at-home potential of this novel treatment.

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Head-to-head Trial of Prolonged-Release Oral Ketamine Formulation,
KET01, and Intranasal SPRAVATO®

Ketabon Program - CADSS Score

The Phase 1 trial compared 240 mg KET01 tablets to SPRAVATO® (intranasal esketamine) in 25 healthy male participants. Participants receiving KET01 experienced no or minimal dissociation—mean maximum CADSS score at post administration assessments until 24 hours after dosing was 29.6 for SPRAVATO® and 0.7 for KET01 (p < 0.001).

Strong Potential in the Early Treatment of MDD,
Addressing a Serious Unmet Medical Need

The findings inspired the extension of Ketabon’s strategy beyond Treatment-Resistant Depression to the broader Major Depressive Disorder indication.

KET01’s proprietary formulation effectively separates ketamine’s rapid antidepressant properties from its undesirable dissociative and cardiovascular side effects. Any patient beginning treatment with antidepressants or transitioning to a new antidepressant may therefore benefit from KET01 as a rapid-acting adjunctive treatment for MDD.

Entering Pivotal Phase 3 Clinical Trials
and targeting market entry by 2028

Building on promising clinical data, KET01 is now progressing to pivotal Phase 3 trials to evaluate its efficacy, safety, and tolerability as a rapid-acting adjunctive treatment for Major Depressive Disorder (MDD).

The study is expected to confirm the results of the previous trials, showing early-onset of efficacy, placebo-level dissociative side effects, and excellent tolerability, as well as potentially reveal synergistic efficacy with conventional antidepressants. Enabling safe, unsupervised use, KET01 holds first-in-class potential as a rapid-acting adjunctive therapy in MDD. Market entry is anticipated by 2028.

Ketabon program

KET01 in TRD
KET01 in MDD

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