{"uid":"cap_hQzJlUhVE778Jp6whA5ex","slug":"sperduto-2019-gi-gpa-calculator-gastrointestinal-graded-prognostic-df4c4d85","name":"Sperduto 2019 GI-GPA Calculator (Gastrointestinal Graded Prognostic Assessment)","description":"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.","url":"https://api.magentlab.com/api/calc/gi_gpa","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"headers":{"type":"object","additionalProperties":{"type":"string"}},"queryParams":{"type":"object","required":["kps","age","extracranial_metastases","brain_metastasis_count"],"properties":{"age":{"type":"integer","description":"Age in years (18-120). Sperduto 2019 Table 4: >=60 scores 0; <60 scores 0.5."},"kps":{"type":"integer","description":"Caller-assigned Karnofsky Performance Status decade 10, 20, 30, 40, 50, 60, 70, 80, 90, or 100. Sperduto 2019 Table 4: <80 (10-70) scores 0; 80 scores 1.0; 90-100 scores 2.0. Grade 0 (dead) is not scored. magent does not assign KPS."},"brain_metastasis_count":{"type":"integer","description":"Number of brain metastases (integer 1-50). Sperduto 2019 Table 4: >3 scores 0; 2-3 scores 0.5; 1 scores 1.0. magent does not count metastases on imaging."},"extracranial_metastases":{"type":"boolean","description":"Extracranial metastases (ECM). true (present) scores 0; false (absent) scores 0.5 (Sperduto 2019 Table 4). magent does not stage extracranial disease."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_K7UenUYjcJB_3QnmI_Fdw","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes the Sperduto 2019 updated GI-GPA score and associated median survival estimate for gastrointestinal cancer patients with brain metastases","exampleAgentPrompt":"Calculate the GI-GPA score for a 58-year-old GI cancer patient with a KPS of 80, 2 brain metastases, and no extracranial metastases — what's the score and expected median survival?","exampleUseCases":[{"title":"Multidisciplinary tumor board prognosis review","prompt":"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?"},{"title":"Radiation oncology consult documentation","prompt":"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?"},{"title":"Clinical trial eligibility stratification","prompt":"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."}],"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T01:20:46.212Z","isFirstParty":false}