Patient
VAR-BREAST-RELAPSED · Algorithm: ALGO-BREAST-HER2-POS-2L
Clinical significance of mutations (ESCAT)
Tumor-board context — the engine does not use these tiers to rank tracks
| Biomarker | Variant | ESCAT | Evidence | Clinical significance | Drugs | Sources |
|---|
| No clinically actionable variants matched in this profile. |
| Biomarker | Status |
|---|
| BIO-BRCA-GERMLINE | BIO definition in KB; no ESCAT BMA entry — verify with clinician |
Primary current-line option
- Indication
- IND-BREAST-HER2-POS-MET-2L-TDXD
- Regimen
- T-DXd monotherapy (HER2+ metastatic 2L+, also HER2-low metastatic)
- Drugs + NSZU
- Trastuzumab deruxtecan (T-DXd) (DRUG-TRASTUZUMAB-DERUXTECAN) 5.4 mg/kg IV · Day 1 of 21-day cycle, continuous until progression · IV ✓ NSZU covered
- Supportive care
- SUP-BONE-HEALTH-PROSTATE
- Reason
- Primary current-line option selected by ALGO-BREAST-HER2-POS-2L at step 3.
Pre-treatment investigations
Investigations before treatment start · critical / standard / desired · merged across tracks
| ID | Name | Priority | Category | Where to order | Needed for |
|---|
| TEST-CECT-CAP | CECT chest/abdomen/pelvis | Critical | imaging | — | all tracks |
| TEST-ER-PR-IHC | ER + PR immunohistochemistry on tumor | Critical | — | CSD Lab ✓ (code TBC) | all tracks |
| TEST-HER2-IHC-FISH | HER2 IHC + reflex FISH on tumor | Critical | — | CSD Lab ✓ (code TBC) | all tracks |
Red flags — PRO / CONTRA aggressive
PRO-AGGRESSIVE
Triggers that push toward the aggressive track
- HBV/HCV/HIV serology + dental evaluation pre-bisphosphonate/denosumab + DPYD genotyping for capecitabine-containing regimens (EU practice).RF-BREAST-INFECTION-SCREENING
CONTRA-AGGRESSIVE
Hard contraindications to escalation
Timeline
Treatment timeline — derived from regimen + monitoring schedule
Standard plan
Induction · T-DXd monotherapy (HER2+ metastatic 2L+, also HER2-low metastatic)
21-day cycles × Continuous until progression or unacceptable toxicity
MDT brief
Discussion questions (1, 1 blocking)
BLOCKING OQ-BIOMARKER-HER2-SOLID
What is the status of HER2 status (solid tumors — gastric/GEJ/CRC scoring) (BIO-HER2-SOLID)? It is required by track(s): IND-BREAST-HER2-POS-MET-2L-TDXD. Expected value: positive.
A treatment-track biomarker requirement is missing from the patient profile; the MDT should verify the test result, method, specimen, and date before relying on this option.
→ pathologist
MDT talk tree (1 steps)
| # | Owner | Topic | Action |
|---|
| 1 | pathologist | Biomarker status BLOCKING | What is the status of HER2 status (solid tumors — gastric/GEJ/CRC scoring) (BIO-HER2-SOLID)? It is required by track(s): IND-BREAST-HER2-POS-MET-2L-TDXD. Expected value: positive. |
Data quality
Incomplete for default-track review. Default-track review is incomplete until required biomarker gaps are resolved.
- Biomarker coverage: 0/1 known (0%), 1 missing, 1 default-track gaps
- Unevaluated RedFlags: RF-ACTIVE-AUTOIMMUNE-DISEASE-ICI-RISK, RF-BREAST-AKT1-E17K-ACTIONABLE, RF-BREAST-AKT1-E17K-CAPIVASERTIB-CANDIDATE, RF-BREAST-BRCA-GERMLINE-ACTIONABLE, RF-BREAST-CDH1-LOBULAR-CANDIDATE, RF-BREAST-EARLY-STAGE, RF-BREAST-ESR1-MUT-ACTIONABLE, RF-BREAST-ESR1-Y537S-D538G-CANDIDATE, RF-BREAST-FRAILTY-AGE, RF-BREAST-HER2-AMP-ACTIONABLE, RF-BREAST-HER2-LOW-ACTIONABLE, RF-BREAST-HER2-ULTRALOW-CANDIDATE, RF-BREAST-HIGH-RISK-BIOLOGY, RF-BREAST-INFECTION-SCREENING, RF-BREAST-ORGAN-DYSFUNCTION, RF-BREAST-OVARIAN-HRD-ASSAY-DISTINCTION, RF-BREAST-PIK3CA-COALT-INAVOLISIB-CANDIDATE, RF-BREAST-PIK3CA-MUT-ACTIONABLE, RF-BREAST-STAGE-IV-METASTATIC, RF-BREAST-TNBC, RF-BREAST-TRANSFORMATION-PROGRESSION, RF-PAN-ATM-CHEK2-CDK12-PARPI-CANDIDATE, RF-PAN-BRCA-SOMATIC-PARPI-CANDIDATE, RF-PAN-PALB2-PARPI-CANDIDATE
| Missing biomarker | Label | MDT owner | Default track | Required by | Next action |
|---|
BIO-HER2-SOLID | HER2 status (solid tumors — gastric/GEJ/CRC scoring) | pathologist | yes | IND-BREAST-HER2-POS-MET-2L-TDXD | Verify result, method, specimen, and report date before sign-off. Expected/constraint: positive |
Technical MDT skill metadata (0/16 activated in this plan)
All registered virtual specialists. ✓ — activated for this case; ○ — not activated (available for other clinical scenarios).
| Specialist | skill_id | Version | Last reviewed | Sign-offs | Domain |
|---|
| Cellular therapy specialist (CAR-T) | cellular_therapy_specialist | v0.1.0 | 2026-04-25 | 0 | cellular_therapy |
| Clinical pharmacist | clinical_pharmacist | v0.1.0 | 2026-04-25 | 0 | clinical_pharmacy |
| Hematologist / oncohematologist | hematologist | v0.1.0 | 2026-04-25 | 0 | hematology_oncology |
| Hematopathologist (lymphoma / leukemia / myeloma) | hematopathologist | v0.1.0 | 2026-04-25 | 0 | hematopathology |
| Infectious disease / hepatology | infectious_disease_hepatology | v0.1.0 | 2026-04-25 | 0 | infectious_diseases |
| Medical oncologist (solid-tumor chemotherapist) | medical_oncologist | v0.1.0 | 2026-04-25 | 0 | solid_oncology |
| Molecular geneticist / molecular oncologist | molecular_geneticist | v0.1.0 | 2026-04-25 | 0 | molecular_oncology |
| Palliative care | palliative_care | v0.1.0 | 2026-04-25 | 0 | palliative_care |
| Pathologist (general) | pathologist | v0.1.0 | 2026-04-25 | 0 | pathology |
| Primary care / family physician | primary_care | v0.1.0 | 2026-04-25 | 0 | primary_care |
| Psycho-oncologist | psychologist | v0.1.0 | 2026-04-25 | 0 | psychosocial |
| Radiation oncologist | radiation_oncologist | v0.1.0 | 2026-04-25 | 0 | radiation_oncology |
| Radiologist | radiologist | v0.1.0 | 2026-04-25 | 0 | diagnostic_imaging |
| Social worker / case manager | social_worker_case_manager | v0.1.0 | 2026-04-25 | 0 | psychosocial |
| Surgical oncologist | surgical_oncologist | v0.1.0 | 2026-04-25 | 0 | surgical_oncology |
| Transplant specialist (BMT) | transplant_specialist | v0.1.0 | 2026-04-25 | 0 | cellular_therapy |
Sources cited
- SRC-DESTINY-BREAST03-CORTES-2022: Trastuzumab Deruxtecan versus Trastuzumab Emtansine for Breast Cancer (2022)
- SRC-ESMO-BREAST-METASTATIC-2024: ESMO Clinical Practice Guideline on Metastatic Breast Cancer (2024)
- SRC-HER2CLIMB-MURTHY-2019: Tucatinib, Trastuzumab, and Capecitabine for HER2-Positive Metastatic Breast Cancer (2019)
- SRC-NCCN-BREAST-2025: NCCN Clinical Practice Guidelines — Breast Cancer (2025.v4)
Experimental options (clinical trials)
Last synced: 2026-05-13 · ctgov.
No active trials matched this scenario in ctgov.
Option availability in Ukraine
Per-track UA registration · NSZU · cost · access pathway. Render-time metadata; engine selection does not depend on these fields (CHARTER §8.3).
| Option | UA registration | NSZU | Cost orientation | Access pathway |
|---|
| Standard plan T-DXd monotherapy (HER2+ metastatic 2L+, also HER2-low metastatic) (REG-TDXD-METASTATIC) | ✓ registered | ✓ covered | ₴-? — verify pathway | NSZU formulary |
Cost information is orientation. Verify with a specific pharmacy / foundation / trial site. Status updated: 2026-05-13.