Barbour 2019 race-free full IgAN model
Barbour 2019 race-free full IgAN model: 5-year risk of 50% eGFR decline or ESKD from age, eGFR, MAP, proteinuria g/day, Oxford MEST, RAS blockade, and immunosuppression at biopsy. Risk = 1 - S0(60)^exp(LP) with eTable 3 coefficients. Caller supplies eGFR; magent does not compute CKD-EPI or score the biopsy. Not the race/ethnicity model. Not KFRE. Not a diagnosis or treatment order. Not a medical device.
Asked 1.4x its listed price for its own exampleour last check, 2026-09-28
1 of 1checks answered this week
286 msmedian answer time
$0.005listed price per call
$0.007price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://api.magentlab.com/api/calc/igan_predict
| Category | Everything else |
|---|---|
| Provider host | api.magentlab.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-28 | valid payment request | 402 | $0.007 | 286 ms |
Example input (from the provider)
{
"body": {
"items": [
{
"age_years": 38,
"egfr_ml_min_1_73m2": 77,
"immunosuppression_at_biopsy": false,
"map_mm_hg": 97,
"mest_e": 0,
"mest_m": 1,
"mest_s": 1,
"mest_t": 0,
"proteinuria_g_day": 1.1,
"rasb_at_biopsy": true
},
{
"age_years": 38,
"egfr_ml_min_1_73m2": 77,
"immunosuppression_at_biopsy": false,
"map_mm_hg": 97,
"mest_e": 0,
"mest_m": 1,
"mest_s": 1,
"mest_t": 0,
"proteinuria_g_day": 1.1,
"rasb_at_biopsy": true
}
]
},
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"items": {
"items": {
"properties": {
"age_years": {
"description": "Age at biopsy in years (integer 18-120). Barbour 2019 derivation was adults 18 years or older. Enters the linear predictor as age_years - 38.",
"type": "integer"
},
"egfr_ml_min_1_73m2": {
"description": "Caller-supplied eGFR in mL/min/1.73 m2 (5-200). Enters as sqrt(eGFR) centered at 8.8. Derivation used CKD-EPI and excluded ESKD at biopsy. magent does not compute CKD-EPI and does not assay creatinine.",
"type": "number"
},
"immunosuppression_at_biopsy": {
"description": "true if immunosuppression was in use at biopsy. Enters as 1 or 0. magent does not prescribe immunosuppression.",
"type": "boolean"
},
"map_mm_hg": {
"description": "Mean arterial pressure at biopsy in mm Hg (30-180). Enters centered at 97 and in the proteinuria\u00d7MAP interaction.",
"type": "number"
},
"mest_e": {
"description": "Oxford MEST endocapillary hypercellularity at biopsy. 0 = E0, 1 = E1. magent does not score the biopsy.",
"enum": [
0,
1
],
"type": "integer"
},
"mest_m": {
"description": "Oxford MEST mesangial hypercellularity at biopsy. 0 = M0, 1 = M1. magent does not score the biopsy.",
"enum": [
0,
1
],
"type": "integer"
},
"mest_s": {
"description": "Oxford MEST segmental sclerosis at biopsy. 0 = S0, 1 = S1. magent does not score the biopsy.",
"enum": [
0,
1
],
"type": "integer"
},
"mest_t": {
"description": "Oxford MEST tubular atrophy/interstitial fibrosis at biopsy. 0 = T0, 1 = T1, 2 = T2. T1 and T2 have main-effect and proteinuria-interaction terms. magent does not score the biopsy.",
"enum": [
0,
1,
2
],
"type": "integer"
},
"proteinuria_g_day": {
"description": "Proteinuria at biopsy in g/day (0.01-20). Enters as natural log, centered at 0.09, plus interactions with MAP, T, and RASB. magent does not assay urine protein.",
"type": "number"
},
"rasb_at_biopsy": {
"description": "true if renin-angiotensin system blockade (ACE inhibitor or ARB) was in use at biopsy. Enters as 1 or 0 plus a RASB\u00d7proteinuria term. magent does not prescribe RAS blockade.",
"type": "boolean"
}
},
"required": [
"age_years",
"egfr_ml_min_1_73m2",
"map_mm_hg",
"proteinuria_g_day",
"mest_m",
"mest_e",
"mest_s",
"mest_t",
"rasb_at_biopsy",
"immunosuppression_at_biopsy"
],
"type": "object"
},
"maxItems": 25,
"minItems": 1,
"type": "array"
}
},
"required": [
"items"
],
"type": "object"
},
"headers": {
"additionalProperties": {
"type": "string"
},
"type": "object"
},
"method": {
"const": "POST",
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}