What are the limitations of the cml scores comparison?

While the cml scores comparison is highly validated, it should not replace clinical judgment. OpiCalc provides the latest evidence-based limitations for the cml scores comparison to ensure safe bedside use and optimal diagnostic accuracy.

How does the cml scores comparison compare to other Hematology scores?

The cml scores comparison is a gold-standard diagnostic tool. OpiCalc provides side-by-side clinical guidance to help clinicians choose the most specific evidence-based tool for their patient's presentation.

Is the cml scores comparison free to use?

Yes. OpiCalc provides the cml scores comparison completely ad-free and optimized for mobile bedside use, ensuring you can calculate medical risk swiftly and without distraction.

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Sokal/EUTOS/ELTS Comparison

Unified CML Registry: Side-by-side comparison of prognostic models. ELTS is the modern survivor-validated standard (European LeukemiaNet).

1. Baseline Biometrics

Age (yr)

Spleen LCM (cm)

2. Blood Film

Blasts (%)

Basophils (%)

3. FBC Parameters

Platelets (×10^9/L)

Guidelines & Evidence

Clinical Details

Section 1

When to Use

Baseline risk stratification for patients with newly diagnosed Chronic Myeloid Leukemia (CML) in chronic phase.

Aiding the selection of Tyrosine Kinase Inhibitor (TKI) therapy (first-line imatinib vs. 2nd-gen TKIs).

Predicting long-term outcomes (Complete Cytogenetic Response and Disease-Specific Mortality).

Model Selection

ELTS is currently the preferred model as it was developed in the TKI era and specifically predicts CML-related mortality.

Section 2

Formula & Logic

Variables Compared

Model	Standard Output	Key Variables
Sokal	Overall Survival	Age, Spleen, Platelets, Blasts
EUTOS	Cytogenetic Response	Spleen, Basophils
ELTS	CML-Specific Survival	Age, Spleen, Platelets, Blasts

Spleen Measurement

Spleen size must be measured in cm below the left costal margin (LCM).

Section 3

Pearls/Pitfalls

Why ELTS Matters

The older Sokal score tends to over-categorize patients into high-risk groups. The ELTS score, derived from a cohort of >2,000 TKI-treated patients, provides a more accurate estimate of the small percentage of patients likely to die from CML progression.

Therapeutic Pivot

High ELTS/Sokal scores often prompt clinicians to consider stronger initial therapy (e.g., Dasatinib or Nilotinib) to achieve faster molecular responses.

Section 4

Evidence Appraisal

Primary Strategy

The European LeukemiaNet prognostic score for CML-specific survival in patients treated with TKIs.

Pfirrmann M et al. • Leukemia. 2016;30(6):1352-61. (ELTS Score)

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Prognostic discrimination in "good-risk" chronic granulocytic leukemia.

Sokal JE et al. • Blood. 1984;63(4):789-99. (The original Sokal score)

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Section 5

Literature

Terminology

ELTS stands for European LeukemiaNet (ELN) Treatment Outcome Study.

Last Comprehensive Review: 2026

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