Trend AnalysisMedicine & Health
Psychedelic-Assisted Therapy: Psilocybin for Treatment-Resistant Depression
Approximately 30% of patients with major depressive disorder do not respond to two or more adequate antidepressant trials โ a condition termed treatment-resistant depression (TRD). Psilocybin, the act...
By Sean K.S. Shin
This blog summarizes research trends based on published paper abstracts. Specific numbers or findings may contain inaccuracies. For scholarly rigor, always consult the original papers cited in each post.
The Question
Approximately 30% of patients with major depressive disorder do not respond to two or more adequate antidepressant trials โ a condition termed treatment-resistant depression (TRD). Psilocybin, the active compound in "magic mushrooms," has shown rapid and sustained antidepressant effects in controlled clinical trials when administered alongside structured psychological support. After decades of prohibition, regulatory agencies are cautiously reopening the door. But does psilocybin's therapeutic effect require the subjective psychedelic experience, or is it purely pharmacological? And can psychedelic-assisted therapy (PAT) be standardised and scaled within existing healthcare systems?
Landscape
Breeksema et al. (2024) conducted qualitative interviews with TRD patients who received psilocybin in clinical trials. Patient accounts revealed that the therapeutic experience involves not just symptom reduction but fundamental shifts in self-perception and emotional processing. Key themes: reconnection with emotions, dissolution of rigid thought patterns, and a sense of meaning-making that patients attributed to the psychedelic experience itself. This phenomenological data challenges reductive pharmacological explanations.
Kirliฤ et al. (2025), published in the American Journal of Psychiatry, described the COMPASS Psychological Support Model โ a structured framework for providing psychological support during COMP360 psilocybin treatment. The model addresses a practical concern: unlike a pill that patients take at home, PAT requires trained therapist(s) present for 6โ8 hours during the acute experience (the COMPASS model specifies one therapist; some other protocols use two). The COMPASS model standardises therapist training, session structure, and integration support, attempting to make PAT reproducible across clinical sites.
Falchi-Carvalho et al. (2025), published in Neuropsychopharmacology, reported a Phase 2a trial of vaporised N,N-dimethyltryptamine (DMT) โ a related psychedelic with a much shorter duration (~15โ20 minutes vs. 6โ8 hours for psilocybin). The shorter experience dramatically reduces clinical resource requirements while showing comparable antidepressant effects.
Fernรกndez-Borkel et al. (2025) proposed a specific RCT design to test whether consciousness during the psychedelic experience is causally necessary for the therapeutic effect. Their protocol uses three arms โ psilocybin conscious, psilocybin under propofol-induced anaesthesia, and placebo under anaesthesia โ with fMRI and brain entropy measures to dissociate subjective experience from neurobiological effects. If psychedelic-like neuroplasticity can be achieved without the subjective experience (as some non-hallucinogenic psychedelic analogues suggest), the scalability barrier may be solvable.
Key Claims & Evidence
<
| Claim | Evidence | Verdict |
|---|
| Psilocybin produces rapid, sustained antidepressant effects in TRD | Multiple Phase 2 trials show significant MADRS score reductions lasting weeks (Meikle et al. 2025) | Supported; effect size larger than SSRIs |
| The subjective experience may be therapeutically essential | Patient phenomenology links experience to therapeutic outcome (Breeksema et al. 2024) | Debated; non-hallucinogenic analogues challenge this claim |
| Structured psychological support is critical for safety | COMPASS model standardises PAT delivery (Kirliฤ et al. 2025) | Clinically accepted; integral to all current protocols |
| Shorter-acting psychedelics (DMT) show comparable efficacy | Phase 2a DMT trial shows rapid antidepressant effects in ~15โ20 minutes (Falchi-Carvalho et al. 2025) | Promising; larger trials needed |
Open Questions
Regulatory pathway: Will FDA approve psilocybin via the standard drug-approval pathway, or will a novel regulatory framework be needed for a therapy that combines a drug with a psychotherapeutic intervention?
Scalability: Each PAT session requires trained therapist(s) present for 6โ8 hours (some protocols use 2 therapists; the COMPASS model uses 1). Can healthcare systems absorb this resource intensity for the millions of TRD patients who might benefit?
Long-term safety: What are the effects of repeated psilocybin exposures over years? Current data covers single or few-session protocols.
Equity: At $3,500โ$10,000 per treatment session (including therapist time; higher projections up to $20,000 in commercial settings remain speculative), will PAT be accessible only to wealthy patients, or can scaled models reduce cost?Referenced Papers
- [1] Breeksema, J. et al. (2024). Patient perspectives on psilocybin treatment for TRD. Scientific Reports, 14, 4716. DOI: 10.1038/s41598-024-53188-9
- [2] Kirliฤ, N. et al. (2025). COMPASS Psychological Support Model for COMP360 Psilocybin. Am. J. Psychiatry. DOI: 10.1176/appi.ajp.20230884
- [3] Falchi-Carvalho, M. et al. (2025). Rapid antidepressant effects of vaporized DMT: Phase 2a trial. Neuropsychopharmacology. DOI: 10.1038/s41386-025-02091-6
- [4] Fernรกndez-Borkel, T. et al. (2025). Causal Role of Consciousness in Psychedelic Therapy for TRD. ACS Pharmacology & Translational Science. DOI: 10.1021/acsptsci.5c00445
- [5] Meikle, S. et al. (2025). Psilocybin with psychotherapeutic support for TRD: pilot clinical trial. Therapeutic Advances in Psychopharmacology. DOI: 10.1177/20451253251377187
๋ฉด์ฑ
์กฐํญ: ์ด ๊ฒ์๋ฌผ์ ์ ๋ณด ์ ๊ณต์ ์ํ ์ฐ๊ตฌ ๋ํฅ ๊ฐ์์ด๋ค. ํ์ ์ ์๋ฌผ์์ ์ธ์ฉํ๊ธฐ ์ ์ ์๋ณธ ๋
ผ๋ฌธ์ ํตํด ํน์ ๋ฐ๊ฒฌ, ํต๊ณ ๋ฐ ์ฃผ์ฅ์ ๊ฒ์ฆํด์ผ ํ๋ค.
์ฌ์ดํค๋ธ๋ฆญ ๋ณด์กฐ ์น๋ฃ: ์น๋ฃ ์ ํญ์ฑ ์ฐ์ธ์ฆ์ ๋ํ ์ค๋ก์๋น
๋ถ์ผ: ์ํ | ๋ฐฉ๋ฒ๋ก : ์์์ํ
์ ์: Sean K.S. Shin | ๋ ์ง: 2026-03-17
์ฐ๊ตฌ ์ง๋ฌธ
์ฃผ์ ์ฐ์ธ ์ฅ์ ํ์์ ์ฝ 30%๋ ๋ ๊ฐ์ง ์ด์์ ์ ์ ํ ํญ์ฐ์ธ์ ์ํ์ ๋ฐ์ํ์ง ์๋๋ฐ, ์ด๋ฅผ ์น๋ฃ ์ ํญ์ฑ ์ฐ์ธ์ฆ(TRD)์ด๋ผ๊ณ ํ๋ค. "๋ง๋ฒ์ ๋ฒ์ฏ"์ ํ์ฑ ํํฉ๋ฌผ์ธ ์ค๋ก์๋น(psilocybin)์ ๊ตฌ์กฐํ๋ ์ฌ๋ฆฌ์ ์ง์๊ณผ ํจ๊ป ํฌ์ฌ๋ ๋ ํต์ ๋ ์์์ํ์์ ๋น ๋ฅด๊ณ ์ง์์ ์ธ ํญ์ฐ์ธ ํจ๊ณผ๋ฅผ ๋ณด์ฌ์ฃผ์๋ค. ์์ญ ๋
๊ฐ์ ๊ธ์ง ์ดํ, ๊ท์ ๊ธฐ๊ด๋ค์ ์กฐ์ฌ์ค๋ฝ๊ฒ ๋ฌธ์ ๋ค์ ์ด๊ณ ์๋ค. ๊ทธ๋ฌ๋ ์ค๋ก์๋น์ ์น๋ฃ ํจ๊ณผ๋ ์ฃผ๊ด์ ์ธ ์ฌ์ดํค๋ธ๋ฆญ ๊ฒฝํ์ ํ์๋ก ํ๋๊ฐ, ์๋๋ฉด ์์ ํ ์ฝ๋ฆฌํ์ ์ธ ๊ฒ์ธ๊ฐ? ๊ทธ๋ฆฌ๊ณ ์ฌ์ดํค๋ธ๋ฆญ ๋ณด์กฐ ์น๋ฃ(PAT)๋ ๊ธฐ์กด ์๋ฃ ์์คํ
๋ด์์ ํ์คํ๋๊ณ ํ์ฅ๋ ์ ์๋๊ฐ?
์ฐ๊ตฌ ๋ํฅ
Breeksema ๋ฑ(2024)์ ์์์ํ์์ ์ค๋ก์๋น์ ํฌ์ฌ๋ฐ์ TRD ํ์๋ค์ ๋์์ผ๋ก ์ง์ ์ธํฐ๋ทฐ๋ฅผ ์ค์ํ์๋ค. ํ์๋ค์ ์ง์ ์ ์น๋ฃ ๊ฒฝํ์ด ๋จ์ํ ์ฆ์ ๊ฐ์๋ฟ๋ง ์๋๋ผ ์๊ธฐ ์ธ์๊ณผ ์ ์ ์ฒ๋ฆฌ์ ๊ทผ๋ณธ์ ์ธ ๋ณํ๋ฅผ ์๋ฐํจ์ ๋ณด์ฌ์ฃผ์๋ค. ์ฃผ์ ์ฃผ์ ๋ก๋ ๊ฐ์ ๊ณผ์ ์ฌ์ฐ๊ฒฐ, ๊ฒฝ์ง๋ ์ฌ๊ณ ํจํด์ ํด์, ๊ทธ๋ฆฌ๊ณ ํ์๋ค์ด ์ฌ์ดํค๋ธ๋ฆญ ๊ฒฝํ ์์ฒด์ ๊ท์ธํ ์๋ฏธ ํ์ฑ ๊ฐ๊ฐ์ด ์์๋ค. ์ด ํ์ํ์ ๋ฐ์ดํฐ๋ ํ์๋ก ์ ์ฝ๋ฆฌํ์ ์ค๋ช
์ ์ด์๋ฅผ ์ ๊ธฐํ๋ค.
American Journal of Psychiatry์ ๊ฒ์ฌ๋ Kirliฤ ๋ฑ(2025)์ COMP360 ์ค๋ก์๋น ์น๋ฃ ์ค ์ฌ๋ฆฌ์ ์ง์์ ์ ๊ณตํ๊ธฐ ์ํ ๊ตฌ์กฐํ๋ ํ์ธ COMPASS ์ฌ๋ฆฌ์ ์ง์ ๋ชจ๋ธ์ ๊ธฐ์ ํ์๋ค. ์ด ๋ชจ๋ธ์ ์ค์ง์ ์ธ ์ฐ๋ ค๋ฅผ ๋ค๋ฃฌ๋ค. ํ์๊ฐ ์ง์์ ๋ณต์ฉํ๋ ์์ฝ๊ณผ ๋ฌ๋ฆฌ, PAT๋ ๊ธ์ฑ ๊ฒฝํ(COMPASS ๋ชจ๋ธ์ ์น๋ฃ์ฌ 1๋ช
์ ๋ช
์ํ๋ฉฐ, ์ผ๋ถ ๋ค๋ฅธ ํ๋กํ ์ฝ์ 2๋ช
์ ์ฌ์ฉํจ) ๋์ 6~8์๊ฐ ๋์ ํ๋ จ๋ ์น๋ฃ์ฌ๊ฐ ์ฐธ์ํด์ผ ํ๋ค. COMPASS ๋ชจ๋ธ์ ์น๋ฃ์ฌ ํ๋ จ, ์ธ์
๊ตฌ์กฐ, ํตํฉ ์ง์์ ํ์คํํ์ฌ ์์ ํ์ฅ ์ ๋ฐ์ ๊ฑธ์ณ PAT๋ฅผ ์ฌํ ๊ฐ๋ฅํ๊ฒ ๋ง๋ค๊ณ ์ ํ๋ค.
Neuropsychopharmacology์ ๊ฒ์ฌ๋ Falchi-Carvalho ๋ฑ(2025)์ ๊ธฐํ๋ N,N-๋๋ฉํธํธ๋ฆฝํ๋ฏผ(DMT)์ 2a์ ์ํ ๊ฒฐ๊ณผ๋ฅผ ๋ณด๊ณ ํ์๋ค. DMT๋ ๊ด๋ จ ์ฌ์ดํค๋ธ๋ฆญ ๋ฌผ์ง๋ก, ์ง์ ์๊ฐ์ด ํจ์ฌ ์งง๋ค(์ค๋ก์๋น์ 6~8์๊ฐ์ ๋นํด ์ฝ 15~20๋ถ). ์ด ์งง์ ๊ฒฝํ์ ์์ ์์ ์๊ตฌ๋์ ๊ทน์ ์ผ๋ก ๊ฐ์์ํค๋ฉด์๋ ๋น๊ต ๊ฐ๋ฅํ ํญ์ฐ์ธ ํจ๊ณผ๋ฅผ ๋ณด์ฌ์ฃผ์๋ค.
Fernรกndez-Borkel ๋ฑ(2025)์ ์ฌ์ดํค๋ธ๋ฆญ ๊ฒฝํ ์ค ์์์ด ์น๋ฃ ํจ๊ณผ์ ์ธ๊ณผ์ ์ผ๋ก ํ์ํ์ง๋ฅผ ๊ฒ์ฆํ๊ธฐ ์ํ ํน์ RCT ์ค๊ณ๋ฅผ ์ ์ํ์๋ค. ๊ทธ๋ค์ ํ๋กํ ์ฝ์ ์ธ ๊ฐ์ง ๊ตฐ์ ์ฌ์ฉํ๋ค. ์ฆ, ์์ ์๋ ์ค๋ก์๋น ํฌ์ฌ๊ตฐ, ํ๋กํฌํด ์ ๋ ๋ง์ทจ ํ์ ์ค๋ก์๋น ํฌ์ฌ๊ตฐ, ๋ง์ทจ ํ์ ์์ฝ ํฌ์ฌ๊ตฐ์ผ๋ก ๊ตฌ์ฑ๋๋ฉฐ, fMRI์ ๋ ์ํธ๋กํผ ์ธก์ ์ ํตํด ์ฃผ๊ด์ ๊ฒฝํ๊ณผ ์ ๊ฒฝ์๋ฌผํ์ ํจ๊ณผ๋ฅผ ๋ถ๋ฆฌํ๋ค. ๋ง์ฝ ์ฌ์ดํค๋ธ๋ฆญ ์ ์ฌ ์ ๊ฒฝ๊ฐ์์ฑ์ด ์ฃผ๊ด์ ๊ฒฝํ ์์ด๋ ๋ฌ์ฑ๋ ์ ์๋ค๋ฉด(์ผ๋ถ ๋นํ๊ฐ์ฑ ์ฌ์ดํค๋ธ๋ฆญ ์ ์ฌ์ฒด๊ฐ ์์ฌํ๋ฏ), ํ์ฅ์ฑ์ ์ฅ๋ฒฝ์ ํด๊ฒฐ ๊ฐ๋ฅํ ์ ์๋ค.
์ฃผ์ ์ฃผ์ฅ ๋ฐ ๊ทผ๊ฑฐ
<
| ์ฃผ์ฅ | ๊ทผ๊ฑฐ | ํ์ |
|---|
| ์ค๋ก์๋น์ TRD์์ ๋น ๋ฅด๊ณ ์ง์์ ์ธ ํญ์ฐ์ธ ํจ๊ณผ๋ฅผ ๋ํ๋ธ๋ค | ์ฌ๋ฌ 2์ ์ํ์์ ์ ์ฃผ๊ฐ ์ง์๋๋ ์ ์ํ MADRS ์ ์ ๊ฐ์๋ฅผ ๋ณด์ฌ์ค๋ค(Meikle et al. 2025) | ์ง์ง๋จ; ํจ๊ณผ ํฌ๊ธฐ๋ SSRI๋ณด๋ค ํฌ๋ค |
| ์ฃผ๊ด์ ๊ฒฝํ์ด ์น๋ฃ์ ์ผ๋ก ํ์์ ์ผ ์ ์๋ค | ํ์ ํ์ํ์ ๊ฒฝํ๊ณผ ์น๋ฃ ๊ฒฐ๊ณผ๋ฅผ ์ฐ๊ฒฐํ๋ค(Breeksema et al. 2024) | ๋
ผ์ ์ค; ๋นํ๊ฐ์ฑ ์ ์ฌ์ฒด๊ฐ ์ด ์ฃผ์ฅ์ ์ด์๋ฅผ ์ ๊ธฐํ๋ค |
| ๊ตฌ์กฐํ๋ ์ฌ๋ฆฌ์ ์ง์์ด ์์ ์ ์ํด ์ค์ํ๋ค | COMPASS ๋ชจ๋ธ์ด PAT ์ ๊ณต์ ํ์คํํ๋ค(Kirliฤ et al. 2025) | ์์์ ์ผ๋ก ์ธ์ ๋จ; ํ์ฌ ๋ชจ๋ ํ๋กํ ์ฝ์ ํ์์ ์ด๋ค |
| ๋จ๊ธฐ ์์ฉ ์ฌ์ดํค๋ธ๋ฆญ(DMT)์ด ๋น๊ต ๊ฐ๋ฅํ ํจ๋ฅ์ ๋ณด์ | Phase 2a DMT ์์์ํ์์ ์ฝ 15โ20๋ถ ๋ด ์ ์ํ ํญ์ฐ์ธ ํจ๊ณผ ํ์ธ (Falchi-Carvalho et al. 2025) | ์ ๋งํ๋ ๋๊ท๋ชจ ์์์ํ ํ์ |
๋ฏธํด๊ฒฐ ๊ณผ์
๊ท์ ๊ฒฝ๋ก: FDA๊ฐ ์ฝ๋ฌผ๊ณผ ์ฌ๋ฆฌ์น๋ฃ์ ๊ฐ์
์ ๊ฒฐํฉํ ์น๋ฃ๋ฒ์ธ psilocybin์ ํ์ค ์์ฝํ ์น์ธ ๊ฒฝ๋ก๋ฅผ ํตํด ์น์ธํ ๊ฒ์ธ๊ฐ, ์๋๋ฉด ์๋ก์ด ๊ท์ ์ฒด๊ณ๊ฐ ํ์ํ ๊ฒ์ธ๊ฐ?
ํ์ฅ ๊ฐ๋ฅ์ฑ: ๊ฐ PAT ์ธ์
์๋ ํ๋ จ๋ ์น๋ฃ์ฌ๊ฐ 6โ8์๊ฐ ๋์ ํจ๊ปํด์ผ ํ๋ค(์ผ๋ถ ํ๋กํ ์ฝ์ ์น๋ฃ์ฌ 2๋ช
์ ์ฌ์ฉํ๋ฉฐ, COMPASS ๋ชจ๋ธ์ 1๋ช
์ ์ฌ์ฉํ๋ค). ์๋ฃ ์์คํ
์ด ํํ์ ๋ฐ์ ์ ์๋ ์๋ฐฑ๋ง ๋ช
์ TRD ํ์๋ฅผ ์ํด ์ด๋ฌํ ์์ ์ง์ฝ๋๋ฅผ ๊ฐ๋นํ ์ ์์๊น?
์ฅ๊ธฐ ์์ ์ฑ: ์๋
์ ๊ฑธ์น ๋ฐ๋ณต์ ์ธ psilocybin ๋
ธ์ถ์ ํจ๊ณผ๋ ๋ฌด์์ธ๊ฐ? ํ์ฌ ๋ฐ์ดํฐ๋ ๋จ์ผ ๋๋ ์์ ์ธ์
ํ๋กํ ์ฝ๋ง์ ๋ค๋ฃจ๊ณ ์๋ค.
ํํ์ฑ: ์น๋ฃ ์ธ์
๋น $3,500โ$10,000(์น๋ฃ์ฌ ์๊ฐ ํฌํจ; ์์
์ ํ๊ฒฝ์์ ์ต๋ $20,000๊น์ง์ ๋์ ์ถ์ ์น๋ ์ฌ์ ํ ์ถ์ ์ ๋ถ๊ณผํจ)์ ๋น์ฉ์ผ๋ก, PAT๊ฐ ๋ถ์ ํ ํ์์๊ฒ๋ง ์ ๊ทผ ๊ฐ๋ฅํ ๊ฒ์ธ๊ฐ, ์๋๋ฉด ๊ท๋ชจํ ๋ชจ๋ธ์ด ๋น์ฉ์ ์ค์ผ ์ ์์๊น?References (5)
Breeksema, J. J., Niemeijer, A., Krediet, E., Karsten, T., Kamphuis, J., Vermetten, E., et al. (2024). Patient perspectives and experiences with psilocybin treatment for treatment-resistant depression: a qualitative study. Scientific Reports, 14(1).
Kirliฤ, N., Lennard-Jones, M., Atli, M., Malievskaia, E., Modlin, N. L., Peck, S. K., et al. (2025). Compass Psychological Support Model for COMP360 Psilocybin Treatment of Serious Mental Health Conditions. American Journal of Psychiatry, 182(1), 126-132.
Falchi-Carvalho, M., Palhano-Fontes, F., Wieรner, I., Barros, H., Bolcont, R., Laborde, S., et al. (2025). Rapid and sustained antidepressant effects of vaporized N,N-dimethyltryptamine: a phase 2a clinical trial in treatment-resistant depression. Neuropsychopharmacology, 50(6), 895-903.
Fernรกndez-Borkel, T., Borkel, L. F., Rojas-Hernรกndez, J., Hernรกndez-รlvarez, E., Quintana-Hernรกndez, D. J., Ponti, L. G., et al. (2025). The Causal Role of Consciousness in Psychedelic Therapy for Treatment-Resistant Depression: Hypothesis and Proposal. ACS Pharmacology & Translational Science, 8(8), 2839-2847.
Meikle, S., Carter, O., Liknaitzky, P., Johansen, L., Iyer, R., Strauss, N., et al. (2025). Psilocybin with psychotherapeutic support for treatment-resistant depression: a pilot clinical trial. Therapeutic Advances in Psychopharmacology, 15.