Table 1.

Baseline characteristics included in the Lung-molGPA (Sperduto et al. 2016 [28]): minimum point sum 0 (poor prognosis), maximum point sum 4 (good prognosis)

Parameter	Lung-molGPA	DS-GPA
Metastatic spread to extracranial sides	0	0
Brain metastases only	1	1
Age ≥70 years	0	0 if >60 years
Age <70 years	0.5	0.5 if 50–60 years, 1 if <50 years
Karnofsky performance status ≤70	0	0 if <70
Karnofsky performance status 80	0.5	0.5 if 70–80
Karnofsky performance status 90–100	1	1
Number of brain metastases >4	0	0 if >3
Number of brain metastases 1–4	0.5	0.5 if 2–3, 1 if 1
EGFR or ALK positive	1	not part of the assessment

DS-GPA diagnosis-specific graded prognostic assessment [22]