Oura Ring Gen 4 sensor data, not clinical measurementsN=1 case study, not validated for clinical decisionsHEV diagnosed Mar 18; Day 223 post-ruxolitinibMore
Consumer wearable data can support exploratory review only. The HEV diagnosis, temporally confounded with treatment start, remains a material confounder.

Oura Digital Twin Dashboard

Oura Gen 4: 2026-01-08 to 2026-10-24 (290 unique days, 354 sleep periods) · 10/10 analysis modules loaded · Ruxolitinib 10 mg BID from 2026-03-16
POST-HSCT BIOMETRIC MONITORING

Consumer wearable suggests a physiological shift after JAK inhibitor start
exploratory N=1 monitoring in a confounded window

p=0.090
Lowest raw
p-value
0.090
FDR-adjusted
q-value
10/11
Streams surviving
FDR correction
219,030
Biometric readings
analyzed
Oura Ring Gen 4 · 290 days · 10/10 analysis modules · Ruxolitinib 10 mg BID from 2026-03-16
Pre-Ruxolitinib to Post-Ruxolitinib
67 days (73 sleep periods) vs 223 days (281 sleep periods)
Key Finding
Temperature deviation shows the lowest raw p-value observed (p=0.090, q=0.090, 91% posterior probability) in a confounded 223-day post-intervention window. 10/11 CausalImpact streams reach raw p<0.05; 10/11 survive FDR correction. Separate UKF comparisons: Cardiac Reserve shift p<0.001, Sleep Quality shift p<0.001, Lowest HR p<0.001.
Temperature
p=0.090
Effect: -0.06°C
HRV (RMSSD)
21.1ms
vs healthy 42-49 ms | Kleiger 1987 / Bigger 1992
Resting HR
73bpm
Lowest HR p<0.001
SpO2
95.6%
BOS risk: MODERATE (38/100)
Sleep Efficiency
74%
Below 85% threshold
Autonomic Tone
-0.50SD
UKF state | improved | p<0.001
GVHD Score
51/100
7d avg: 28
Anomaly Days
29/354
Feb 9 detected (29 anomaly days, N=1)

Interrupted Time Series: Temperature Response

CausalImpact BSTS

Treatment Effect Sizes

CausalImpact + UKF

Disease State Trajectory

rSLDS 4-State Model

Anomaly Detection

5-Algorithm Ensemble

Composite Biomarker Trends

6 Biomarkers

SpO2 & BOS Risk

Pulmonary Screening

Combined Biosignal Timeline

5-Channel View

Heart Rate Terrain Map

3D Surface

Phase Space Reconstruction

Nonlinear Dynamics

Sleep Architecture Heatmap

Epoch-Level

Circadian Rhythm Analysis

Cosinor Model
Methodology & Data Provenance
Data Source
Oura Ring Gen 4 (continuous PPG, accelerometry, thermometry)
Volume
194,642 HR readings · 24,388 HRV samples · 27,994 sleep epochs
Analysis Pipeline
CausalImpact (BSTS) · Unscented Kalman Filter (5 latent states) · rSLDS (4 disease states) · 5-algorithm anomaly ensemble · 6 composite biomarkers · Chronos-2 / ARIMA forecasting
Sleep Architecture
Deep: 15.4% Light: 51.4% REM: 13.6% Awake: 19.6%
For research and clinical discussion only. Not a diagnostic tool. All p-values are exploratory.