R-IPPS
Revised International Prognostic Scoring System for myelodysplasia      
Prognosis of myelodysplastic syndromes (MDS)              
        1. Sum the scores for each feature
  Value Points   Score Cytogenetic category* Marrow blasts (%) Hemoglobin (g/dL) Platelets (x 109/L) Neutrophils (x 109/L)
Cytogenetic category*
0 Very good ≤ 2 ≥ 10 ≥ 100 ≥ 0.8
Marrow blasts (%)
00:50 - - - 50 - 99 < 0.8
Hemoglobin (g/dL)
01:00 Good 2.1 - 4.9 8 - 9.9 < 50 -
Platelets (x 109/L)
01:50 - - < 8 - -
Neutrophils (x 109/L)
02:00 Intermediate 5 - 10
- -
03:00 Poor > 10 - - -
04:00 Very poor - - - -
SUM of SCORE     2. Use summed score to determine risk category and prognosis  
RISK CATEGORY     Score Risk category Median OS (years) Median time to 25% AML risk (years)  
        ≤ 1.5 Very low 08,08,00 NR  
*Cytogenetic categories:
2.0 - 3.0 Low 05,03,00 10,08,00
Very good: -Y, del(11q)       3.5 - 4.5 Intermediate 03,00,00 03,02,00  
Good: normal, del(5q), del(12p), del(20q), double including del(5q)     5.0 - 6.0 High 01,06,00 01,04,00  
Intermediate: del(7q), +8, +19, i(17q), any other single or double independent clones
> 6.0 Very high 00,08,00 0,0506944444444444
Poor: −7, inv(3)/t(3q)/del(3q), double including −7/del(7q), complex with 3 abnormalities   Reference          
Very poor: complex with >3 abnormalities     Greenberg PL, Tuechler H, Schanz J, Sanz G, Garcia-Manero G, Solé F et al. Revised international prognostic scoring system for myelodysplastic syndromes. Blood 2012; 120: 2454-65