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Sperduto 2019 GI-GPA Calculator (Gastrointestinal Graded Prognostic Assessment)
x402
Sperduto 2019 GI-GPA Calculator (Gastrointestinal Graded Prognostic Assessment) is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Computes the Sperduto 2019 updated GI-GPA score and associated median survival estimate for gastrointestinal cancer patients with brain metastases
Price / call$0.005
Success—
StatusUnknown
How this service works
Sperduto 2019 updated GI-GPA: KPS <80 = 0, 80 = 1.0, 90-100 = 2.0; age >=60 = 0, <60 = 0.5; extracranial metastases present = 0, absent = 0.5; number of brain metastases >3 = 0, 2-3 = 0.5, 1 = 1.0. Max 4.0. GPA 0-1.0 / 1.5-2.0 / 2.5-3.0 / 3.5-4.0 median survival 3, 7, 11, 17 months (abstract/KM). Not a treatment order. Not lung-molGPA. magent does not assign KPS.
Output
Returns the computed GI-GPA total score (0.0–4.0), the prognostic tier (e.g. 0–1.0, 1.5–2.0, 2.5–3.0, 3.5–4.0), and the associated Kaplan-Meier median survival in months (3, 7, 11, or 17 months) per Sperduto 2019 Table 4. Does not assign KPS, count imaging lesions, or stage extracranial disease.
Example use cases
Multidisciplinary tumor board prognosis review
“We're presenting a 65-year-old colorectal cancer patient with a KPS of 90, a single brain metastasis, and no extracranial disease at tumor board — can you calculate their GI-GPA score and tell me the associated median survival?”
Radiation oncology consult documentation
“I need the Sperduto 2019 GI-GPA for a 72-year-old GI cancer patient: KPS is 70, they have 4 brain metastases, and extracranial mets are present. What's the score and prognosis tier?”
Clinical trial eligibility stratification
“For a 52-year-old GI cancer patient with KPS 100, 1 brain met, and no extracranial metastases, run the updated GI-GPA to get their prognostic score and median survival estimate for stratification purposes.”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/gi_gpaWhen to prefer
Use this endpoint when you need to compute the Sperduto 2019 updated GI-GPA specifically for gastrointestinal histology brain metastasis patients — not for lung (use lung-molGPA), breast, or other histology-specific GPA variants. Prefer this over generic survival lookup when discrete clinical variables (KPS, age, ECM, brain met count) are available and you need a validated, guideline-referenced prognostic score tied to Sperduto 2019 median survival data.
Side effects
- Missing required query parameters (kps, age, extracranial_metastases, brain_metastasis_count) returns a validation error
- KPS value outside valid decade range (10–100) or grade 0 (dead) not accepted
- brain_metastasis_count outside integer range 1–50 returns an error
- age outside 18–120 integer range returns a validation error
- Payment failure (x402 protocol) blocks the call if USDC payment is not successfully submitted
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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