Scores

0

1

2

4

Age (years)

<40

≥40

Antecedent pregnancy

Mole

Abortion

Term

Antecedent pregnancy from index pregnancy

<4

4 - 6

7 - 12

≥13

Pre-treatment serum hCG (UI/ml)

<10³

<10,000

<100,000

≥10⁵

Largest tumor size (including uterus)

3- < 5 cm

≥5 cm

Site of metastasis

Lung

Spleen, kidney

Gastro-intestinal

Liver, Brain

Number of metastases

0

1 - 4

5 - 8

>8

Previous failed chemotherapy

Single drug

2 or more drugs