abbvie in partnership with
A partner brief for AbbVie Neuroscience

Pivotal trials for a 60-minute psychedelic deserve a purpose-built measurement stack.

Bretisilocin's short psychoactive window is a clinical breakthrough and an eCOA challenge. Videra Health is the AI measurement platform built to capture rapid-onset behavioral data at the speed your trials, sites, and reviewers demand.

See how we'd partner on bretisilocin

The Asset

Bretisilocin (GM-2505)

A novel, short-acting serotonin 5-HT2A receptor agonist and 5-HT releaser. This next-generation tryptamine delivers the durable antidepressant effect of a psychedelic without the multi-hour session that has historically gated adoption.

IndicationModerate-to-severe MDD
PhasePhase 2 (NDA-track)
Duration of effect60 to 90 minutes
Half-life~45 minutes
RouteIntravenous
Deal valueUp to $1.2B (Gilgamesh)
Why we're paying attention

Bretisilocin is not another psilocybin program. It's a different molecule with a different commercial problem to solve.

An "improved version of DMT"

Bretisilocin (5-fluoro-N-methyl-N-ethyltryptamine) is a substituted tryptamine from Gilgamesh: a potent, well-balanced 5-HT2A / 5-HT2C agonist with serotonin-releasing activity. Peak effects hit 10 to 20 minutes after IV administration. The experience resolves within 60 to 90 minutes.

That short duration is the asset's commercial superpower. It also makes traditional clinical endpoints, designed for hour-long sessions or weekly questionnaires, mismatched to the molecule's mechanism.

The Phase 2a data is "extraordinary"

In a 40-patient Phase 2a MDD study, a single 10 mg IV dose drove a −21.6 point change in MADRS at Day 14 versus −12.1 for the low-dose comparator (p = 0.003). A repeated-dose 10 mg + 15 mg arm reached 94% remission at Day 29, with durability through Day 74. Effect size: ~1.0, roughly 3× conventional antidepressants.

Well tolerated. No serious adverse events. First psychedelic ever admitted to EMA's PRIME scheme (March 2026).

94%
MADRS remission rate at Day 29 (Phase 2a, 10 mg + 15 mg arm)
−21.6
MADRS change vs. baseline at Day 14, single 10 mg dose
~1.0
Effect size vs. ~0.3 for conventional antidepressants
In the News

We've followed bretisilocin since the Phase 2a readout.

From the ASCP topline to the AbbVie acquisition to the EMA PRIME designation.

The measurement problem

The trial design problem inside a 60-minute psychoactive window.

The compressed, in-and-out psychoactive experience that makes bretisilocin commercially viable creates four measurement gaps standard ePRO tooling cannot close.

Gap 1: Endpoints

Rapid onset and offset behavioral shifts aren't captured by paper PROs.

Peak effects hit at 10 to 20 minutes. By the time a clinician administers a MADRS or HAM-D, the most informative behavioral signal (vocal, facial, linguistic) is already fading. You need continuous capture during the session, not after.

Gap 2: Site Consistency

IV dosing plus open-label psychedelic effects equals high facilitator variability.

Phase 3 will run across dozens of sites with different facilitators, rooms, and "psychological support" styles. Without a verified, observable record, signal-vs-noise becomes a regulatory exposure and a payer talking point post-launch.

Gap 3: Real-World Evidence

The post-launch monitoring story isn't told by claims data alone.

Whether bretisilocin earns adoption against Spravato, and whether payers fund it, will hinge on durable functional outcomes between visits. Videra's behavioral health network already captures that data at scale.

Gap 4: Differentiation

"Shorter duration" is a claim. Proving it requires objective measurement.

The story versus longer-duration psychedelics is the commercial wedge. Vocal, facial, and movement biomarkers can timestamp onset, peak, and resolution in a way self-report cannot.

Three ways Videra accelerates Bretisilocin

Purpose-built for trials where every minute matters.

Our platform pairs in-clinic AI hardware with multimodal behavioral analytics and a custom algorithm engine, already proven in TDScreen and Check on Mom. Here's how each maps to bretisilocin.

01 · Ambient Monitoring

An AI-powered video cart that makes every dosing session look the same.

A clinical-grade camera and directional audio rig that drops into any AbbVie trial site in minutes. It captures every researcher and participant interaction in the dosing room with the same framing, angles, and fidelity. Videra's AI watches in real time, flagging protocol deviations as they happen.

  • Verifies dosing protocol adherence and consistent administration across sites
  • Standardizes facilitator language and post-dose check-ins
  • Generates a defensible session record for regulators, monitors, and post-hoc review
  • HIPAA-compliant, end-to-end encrypted; data never leaves the secure pipeline
See it in action. Videra Monitoring Stand reference →
PROTOCOL: VERIFIED Site #042 · Session 14 VIDERA MONITORING STAND Same setup. Same angles. Every site. Every session.
VoiceVitals · Live capture● Recording
00:00T+18 min00:60
Vocal affect tone↑ 32% vs. baseline
Speech rate variabilityNormalized at T+45
Facial expressivity (FACS)Peak T+22 min
Linguistic sentiment+1.8σ shift sustained
02 · Multimodal AI Endpoints

ASSESS turns vocal, facial, and linguistic signal into real-time digital endpoints.

Our ASSESS platform analyzes voice, video, and language during and after each dosing session. It surfaces the rapid behavioral shifts bretisilocin produces in the first 90 minutes, then tracks durability over the weeks that follow. Built for digital endpoints, ePRO+, and real-world evidence.

  • Objectively capture onset, peak, and resolution of the psychoactive window
  • Augment MADRS and HAM-D with continuous, between-visit behavioral data
  • Built on 1M+ patient interactions across 300+ behavioral health facilities
  • Designed for 21 CFR Part 11, HIPAA, and SOC 2 Type II environments
Proof point: Check on Mom. Live AI video screener for postpartum depression →
03 · Custom Algorithms

The same engine that built TDScreen can build bretisilocin's response signature.

We don't stop at data collection. We build condition-specific algorithms on real patient data, with peer-reviewed results. For bretisilocin, that means a proprietary "response signature" model that identifies responders earlier, predicts relapse risk, and underwrites both regulatory submissions and payer evidence.

  • Identify objective biomarkers of antidepressant response in the bretisilocin window
  • Stratify likely responders vs. non-responders earlier in treatment
  • Feed regulatory submissions, label expansion, and payer dossiers
  • Live algorithms today: TDScreen (AUC 0.89, J Clin Psychiatry) and Check on Mom
Proof point: TDScreen. AI that outperforms trained clinician raters, in production →
LIVE · IN MARKET

TDScreen

AI-powered tardive dyskinesia screening built on the AIMS standard. AUC 0.89 vs. trained raters, peer-reviewed in J Clin Psychiatry.

tdscreen.ai →

LIVE · IN MARKET

Check on Mom

Conversational AI + video screener for postpartum depression. Used in real homes, on real devices, validated against clinical frameworks.

checkonmom.ai →

PROPOSED · BRETISILOCIN

A "Bretisilocin Response Signature"

Multimodal AI model trained on Phase 2/3 data, combining vocal, facial, and linguistic biomarkers to timestamp psychoactive onset and offset and predict durability of antidepressant effect.

Strategic Alignment

Where AbbVie Neuroscience is headed, and how Videra fits.

Your priorities, mapped to capabilities Videra already has in production.

AbbVie's Priority
How Videra Accelerates
Move bretisilocin into pivotal Phase 3 with clean, defensible endpoint data
ePRO+ with VoiceVitals captures vocal, facial, and linguistic biomarkers in real time during the 60 to 90 minute session window
Standardize dosing-session conduct across global trial sites
QAview verifies protocol adherence, facilitator consistency, and administration fidelity at every site and session
Generate real-world evidence to support payer access vs. Spravato
Videra's behavioral-health network captures durable, between-visit functional outcomes across MDD, bipolar, and schizophrenia populations at scale
Differentiate bretisilocin on its "compressed window" mechanism
Objective vocal and facial timestamps prove onset, peak, and resolution, turning a marketing claim into a measured biomarker
Strengthen the Vraylar franchise across schizophrenia, bipolar, and MDD
EngageEntry for patient screening; SignalSort for discontinuation and switching risk; InsightTranscribe for KOL advisory board and speaker program intelligence
Built on real-world data

Not a pitch. A platform.

Videra's network isn't our customer base. It's the living dataset that powers every algorithm we build. For AbbVie, that means real clinical depth and peer-reviewed validation.

300+
Behavioral health facilities
1M+
Patient interactions analyzed
0.89
AUC for TDScreen (J Clin Psychiatry, 2025)
94%
Patient program completion rate
HIPAA Compliant SOC 2 Type II 21 CFR Part 11 ready End-to-End Encrypted

Let's explore what this could look like for bretisilocin.

We'd welcome a 30-minute session to walk AbbVie's Neuroscience team through a tailored, protocol-by-protocol proposal for bretisilocin and the broader psychiatry pipeline.

Your Videra contact
Ryan Roberts
Videra Health
ryan@viderahealth.com viderahealth.com →