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haematology oncology

Revised International Staging System for Myeloma (R-ISS)

Revised International Staging System (R-ISS) for multiple myeloma. Incorporates standard ISS staging with high-risk cytogenetics and LDH to improve prognostic stratification.

Score interpretation

R-ISS Stage I — Favourable

→ R-ISS Stage I: ISS Stage I + no high-risk cytogenetics + normal LDH. Median OS >7 years. Standard induction (VRd or Dara-VRd); ASCT if eligible; lenalidomide maintenance. Consider minimal residual disease (MRD) assessment.

R-ISS Stage II — Intermediate

→ R-ISS Stage II: Not Stage I or III criteria. Median OS ~5 years. Bortezomib-based induction; ASCT if eligible; lenalidomide ± bortezomib maintenance. MRD monitoring; haematology MDT.

R-ISS Stage III — High Risk

→ R-ISS Stage III: ISS Stage III + (high-risk cytogenetics OR elevated LDH). Median OS ~2 years. High-intensity treatment: Dara-VRd induction; tandem ASCT or ASCT + consolidation; bortezomib maintenance; consider clinical trial; intensive MRD monitoring.

Interpretation bands for the R-ISS Myeloma. Apply clinical judgement and local guidance.

References

Related

Curated clinical cross-links plus same-class fallbacks.

Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.