A complication risk score to evaluate clinical severity of thalassaemia syndromes

Angela Vitrano, Antonella Meloni, Walter Addario Pollina, Mehran Karimi, Amal El-Beshlawy, Mahmoud Hajipour, Vito Di Marco, Saqib Hussain Ansari, Aldo Filosa, Paolo Ricchi, Adriana Ceci, Shahina Daar, Sylvia Titi Singer, Zaki A. Naserullah, Alessia Pepe, Salvatore Scondotto, Gabriella Dardanoni, Fedele Bonifazi, Elliott Vichinsky, Aurelio Maggio*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


The thalassaemia syndromes (TS) show different phenotype severity. Developing a reliable, practical and global tool to determine disease severity and tailor treatment would be of great value. Overall, 7910 patients were analysed with the aim of constructing a complication risk score (CoRS) to evaluate the probability of developing one or more complications. Nine independent variables were included in the investigation as predictors. Logistic regression models were used for Group A [transfusion-dependent thalassaemia (TDT)], Group B [transfused non-TDT (NTDT)] and Group C (non-transfused NTDT). Statistically significant predictors included age (years), haemoglobin levels, hepatic transaminases [alanine aminotransferase (ALT) and aspartate aminotransferase] and left-ventricular ejection fraction (LVEF) for Group A; age (years), age at first chelation (months), ALT and LVEF for Group B; and age (years), mean serum ferritin (SF) levels and LVEF for Group C. The area under the receiver operating characteristic curve was 84·5%, 82·1% and 80·0% for Groups A, Group B and Group C respectively, suggesting the models had good discrimination. Finally, the CoRS for each group was categorised into four risk classes (low, intermediate, high, and very high) using the centiles of its distribution. In conclusion, we have developed a CoRS for TS that can assist physicians in prospectively tailoring patients’ treatment.

Original languageEnglish
Pages (from-to)626-633
Number of pages8
JournalBritish Journal of Haematology
Issue number3
Publication statusPublished - Feb 2021
Externally publishedYes


  • complications
  • prognostic model
  • risk score
  • thalassaemia

ASJC Scopus subject areas

  • Hematology


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