transcendTHERAPEUTICS in partnership with
A trial observation brief for Transcend Therapeutics

A Phase 3 entactogen for PTSD deserves continuous observation built for the session.

Methylone's compressed entactogenic window is exactly where the therapeutic signal lives, and exactly where standard PRO tools are blindest. Videra Health is the AI observation platform that captures vocal, facial, linguistic, and somatic signal across the session and the weeks that follow.

See how we'd observe TSND-201

The Asset

TSND-201 (methylone)

IV methylone, a next-generation entactogen with a compressed session profile. The only Phase 3 entactogen besides MDMA in PTSD, with a distinct regulatory path post-Lykos.

IndicationPost-Traumatic Stress Disorder
PhasePhase 3
Session duration~2 hours (compressed vs MDMA)
Mechanism5-HT/NE/DA releaser (entactogen)
RouteIntravenous infusion
DifferentiatorShorter, controllable vs MDMA
Why we're paying attention

TSND-201 is a different molecule from MDMA, with a different evidence problem.

The compressed entactogen story

TSND-201 is IV methylone, an entactogen pharmacologically related to MDMA but with a shorter, more compressed session profile. Peak effects hit within minutes of IV administration and the subjective experience resolves in approximately two hours, versus 6 to 8 hours for oral MDMA.

That compressed window is the commercial wedge: less therapist time, smaller scheduling burden, faster patient throughput. It is also where the therapeutic signal lives, and where standard PROs miss the most.

Phase 3 carries the load now

Phase 2 established efficacy and tolerability. Phase 3 is the proof point for a market that just watched Lykos receive a Complete Response Letter on MDMA-AT. The FDA wanted endpoint data Lykos did not have. Building observation into trial design is how that data gets generated.

Compressed session, controllable experience, distinct regulatory path. The evidence package is the differentiator.

~2 hr
Session duration vs 6-8 hr for oral MDMA
Phase 3
Only entactogen besides MDMA at this stage in PTSD
IV
Controllable dose-response vs oral pharmacokinetics
In the News

We've tracked TSND-201 since the Phase 2 readout.

From Phase 2 efficacy to Phase 3 initiation in the post-Lykos PTSD landscape.

The observation problem

A 2-hour entactogenic window, post-Lykos.

The compressed methylone session creates four observation gaps that standard PROs cannot close.

Gap 1: Within-Session Signal

The therapeutic signal lives inside the 2-hour session.

Affect trajectory, somatic response, therapeutic alliance, vocal and linguistic patterns — all peak inside the session. CAPS-5 at Day 28 cannot reach back inside that window. Continuous multimodal observation can.

Gap 2: Post-Lykos Regulatory Bar

The FDA is reading every entactogen Phase 3 with the Lykos CRL fresh in mind.

Functional unblinding evidence, therapist fidelity records, objective behavioral endpoints — these are exactly what Lykos did not deliver. TSND-201 has the advantage of designing for that bar from the start.

Gap 3: Durability Between Sessions

The 2-hour session is brief. The therapeutic durability isn't.

Durable label claims hinge on between-session functional data: PTSD symptom trajectories, sleep, daily functioning. Videra's behavioral health network captures that at scale.

Gap 4: Therapist Consistency at Scale

"Compressed session" is the wedge. Consistency proves it scales.

As Phase 3 scales to more sites, facilitator variability becomes the largest hidden risk. Observable session records make that variance measurable.

How we partner

Capture, Analyze, Co-Develop — pick the entry point.

Bring us a question and we'll capture the data. Bring us your data and we'll run it through our models. Or start from a hypothesis and we'll co-develop a novel endpoint with you, end-to-end.

Capture

Trial or study data capture

We bring the hardware, software, and AI to your site. Behavioral signal collected the same way at every visit, every site, every time.

Analyze

Behavioral insight & analytics

Bring us your existing video, voice, or trial data. Our multimodal models surface vocal, facial, and linguistic biomarkers you couldn't see in PRO data alone.

Co-Develop

Digital models & endpoints

Start from a clinical hypothesis. We build the digital endpoint, the screener, or the response model end-to-end — from study design through peer review.

Three ways Videra observes TSND-201

Purpose-built for entactogen trials where the session is the data.

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 TSND-201.

01 · Ambient Monitoring

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

A clinical-grade camera and directional audio rig that drops into any TSND-201 site in minutes. Every clinician-participant interaction during the 2-hour entactogenic session captured with the same framing, angles, and fidelity. Videra's AI watches in real time, flagging protocol or therapist deviations.

  • 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 →
PRODUCT 01 ROOMVIEW

Ambient room & patient observation

Broad, continuous observation of the full room and the patient during the TSND-201 session. Videra algorithms run on captured video, voice, and movement signal — triggering alerts on abnormalities, acute findings, and protocol-defined events.

  • Cart built for full-room and patient capture
  • AI analysis on the captured signal
  • Real-time alerts on acute findings
PRODUCT 02 FIDELITYVIEW

High-fidelity encounter monitoring

Multi-view cameras and high-fidelity audio focused on close-contact patient–provider interactions. Purpose-built to monitor protocol adherence remotely and protect the fidelity of the trial.

  • Cart built for close-contact capture
  • Multi-view cameras + hi-fi audio
  • Remote protocol-adherence monitoring
PRODUCT 03 LIVEVIEW

Centralized live oversight

Stream Videra carts from one or many rooms to a single central observation point, scaling oversight across TSND-201 sites — in clinic and at commercial launch.

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 the 2-hour session into measurable, FDA-grade endpoints.

Our ASSESS platform analyzes voice, video, and language continuously through the methylone session and the weeks that follow. It surfaces the affect shifts, somatic responses, and linguistic patterns PROs cannot capture, then tracks PTSD symptom durability between visits.

  • 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 TSND-201's response signature.

For TSND-201, that means a proprietary entactogen response signature — identifying likely responders early, predicting relapse risk, and underwriting both the FDA dossier and payer evidence post-launch.

  • Identify objective behavioral biomarkers within the 2-hour TSND-201 session
  • 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. A short, video-based assessment that quantifies involuntary movements, reducing reliance on subjective rating. AUC 0.89 vs. trained raters, peer-reviewed in J Clin Psychiatry.

  • Early & objective detection
  • Scalable, remote, device-agnostic
  • Geographic, demographic, prevalence RWE
  • Supports post-market & HEOR strategies

tdscreen.ai →

LIVE · IN MARKET

Check on Mom

Consumer-friendly video assessment for perinatal & postpartum depression. Surfaces postpartum risk earlier than standard EPDS administration, and routes to care with rich signal.

  • Multi-touch perinatal monitoring
  • Routes to provider with rich signal
  • Built for advocacy + commercial channels
  • Pharma-sponsored deployment model

checkonmom.ai →

PROPOSED · TSND-201

A "TSND-201 Response Signature"

Multimodal AI model trained on Phase 3 data, combining vocal, facial, and linguistic biomarkers within the session to predict PTSD symptom durability at 6, 12, and 26 weeks.

Co-developed with your team, the same way we built TDScreen and Check on Mom for our existing pharma partners.

Strategic Alignment

Where Transcend Therapeutics is headed, and how Videra fits.

Your priorities for TSND-201 and the post-Lykos PTSD landscape, mapped to capabilities Videra already has in production.

Transcend Therapeutics's Priority
How Videra Accelerates
Deliver TSND-201 Phase 3 with the endpoint package the FDA wanted from Lykos
ePRO+ with VoiceVitals captures session-long multimodal signal that survives FDA scrutiny
Standardize clinician conduct across the Phase 3 site network
QAview ambient monitoring verifies IV protocol fidelity and clinician interaction consistency
Generate durable functional outcome data for payer access
Behavioral-health network captures PTSD functional outcomes between sessions at launch scale
Differentiate the compressed 2-hour session vs MDMA
Objective session-timestamps prove the compressed window in trial data, not just slides
Build launch-ready infrastructure for TSND-201 commercial rollout
EngageEntry for PTSD patient screening, SignalSort for response monitoring, InsightTranscribe for KOL sentiment
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 Transcend Therapeutics, 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 TSND-201.

We'd welcome a 30-minute session to walk Transcend's clinical team through a tailored, protocol-by-protocol proposal for TSND-201's Phase 3 program.

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