State of the field
Mainstream pilots; early standardization. The FDA's draft guidance on grief-care clones and CMS reimbursement codes for digital-twin-guided cardiology are the most active fronts in 2026.
Use cases
Patient digital twins
Per-patient models built from imaging, labs, wearables, and history. Used to simulate treatment response, dose escalation, and surgical planning. Cardiology and oncology are the furthest along.
Clinician knowledge clones
Specialist clones answer routine patient messages in the clinician's voice, with escalation to the human when novel symptoms appear. Reduces administrative burden without replacing diagnosis.
Bereavement-care avatars
Bounded-use grief support tools, often delivered through hospice systems with clinical oversight.
Watch outs
- !Liability for twin-recommended treatments remains unresolved.
- !Patient corpora are PHI under HIPAA — training pipelines must respect that.
- !Bereavement-care use needs rate limits and clinician escalation.