AKT inhibitor
Capivasertib
Truqap · Capi
AKT inhibitor · approved 2023 · 6 references
An AKT inhibitor for breast cancer — AKI tends to ride on its diarrhea and hyperglycemia.
- Signature injury
- Prerenal / Hemodynamic AKI
- Severity
- Moderate
- Reversibility
- Reversible
- Onset
- Early in therapy, tracking diarrhea/hyperglycemia (first cycles).
Signature kidney injury & incidence
Prerenal / Hemodynamic AKI.
Diarrhea and hyperglycemia are the characteristic on-target toxicities (diarrhea very common; hyperglycemia frequent, occasionally severe). AKI, when it occurs, is largely a downstream pre-renal consequence of diarrhea-related volume loss and osmotic/metabolic disturbance; direct renal incidence is not well quantified. Rash is common but not nephrotoxic.
Source: Turner et al., N Engl J Med 2023 (CAPItello-291)
Reported injury signatures: Prerenal / Hemodynamic AKI, Electrolyte Disturbance.
Renal toxicity profile
- Prerenal / Hemodynamic AKIPrimary
- Electrolyte DisturbanceSecondary
Onset timing & rechallenge
Acute (~1–7 days) — Early in therapy, tracking diarrhea/hyperglycemia (first cycles).
Mechanism of kidney injury
Clinical presentation
Management
Risk factors
- Severe diarrhea / volume depletion
- Diabetes or baseline hyperglycemia
- Pre-existing CKD
- Concurrent nephrotoxins or diuretics
Prevention
- Prompt antidiarrheal therapy (loperamide) and aggressive oral/IV rehydration
- Manage hyperglycemia early, before osmotic diuresis drives volume depletion
- Patient education to report diarrhea early
Renal dose adjustment
Dialyzability & ESKD dosing
Differential diagnosis
Monitoring
- Fasting glucose/HbA1c at baseline and periodically
- Stool frequency and hydration status
- Serum creatinine and electrolytes (K, Na) each cycle
Key trials & series
- CAPItello-291 (Turner NEJM 2023) phase III with fulvestrant
- CAPItello-290/-281 program (broader development)
Clinical pearls
- Protect the kidney by treating the diarrhea and hyperglycemia fast — the AKI is downstream volume/metabolic, not a tubular toxin.
- Severe hyperglycemia from AKT inhibition can cause osmotic diuresis and pre-renal AKI; monitor glucose proactively.
- The intermittent 4-on/3-off schedule helps mitigate cumulative GI toxicity.
- Rehydration and glycemic control reverse the creatinine rise in most cases.
Anticancer mechanism
Guidelines & consensus
Each recommendation below is this atlas's faithful summary of the source, not a quotation from it — follow the PubMed link for the wording the society published. Summaries may be superseded; consult the current full text and individualize to the patient.
- ADQI (2026) — The nephrotoxic effects of anti-cancer therapies: consensus report of the 34th Acute Disease Quality Initiative workgroupProvides expert-based statements (modified Delphi) on preventing and managing cisplatin/platinum-associated AKI, including isotonic IV hydration, attention to volume status and concomitant nephrotoxins, and incorporates evidence that IV magnesium supplementation may reduce cisplatin-associated AKI; emphasizes risk stratification and standardized AKI definitions.Nat Rev Nephrol · PMID 41361704
- SIRM (2022) — SIRM-SIN-AIOM: appropriateness criteria for evaluation and prevention of renal damage in the patient undergoing contrast medium examinations-consensus statements from Italian College of Radiology (SIRM), Italian College of Nephrology (SIN) and Italian Association of Medical Oncology (AIOM)Recommends eGFR-based renal risk assessment and pre/post-contrast isotonic saline or sodium bicarbonate hydration; advises maintaining a 5-7 day interval between iodinated contrast administration and cisplatin in cancer patients to reduce additive nephrotoxicity.Radiol Med · PMID 35303246
- KDIGO (2020) — KDIGO Controversies Conference on onco-nephrology: understanding kidney impairment and solid-organ malignancies, and managing kidney cancerIdentifies platinum compounds (especially cisplatin) as leading cytotoxic causes of acute tubular injury, AKI, and electrolyte/magnesium wasting; calls for interdisciplinary onco-nephrology care, accurate GFR estimation, and individualized drug dosing in patients with reduced kidney function.Kidney Int · PMID 33126977
- KDIGO (2020) — KDIGO Controversies Conference on onco-nephrology: kidney disease in hematological malignancies and the burden of cancer after kidney transplantationAddresses chemotherapy-associated AKI/CKD in hematologic cancer, GFR estimation and chemotherapy dosing in patients with reduced kidney function, and management priorities and research gaps for onco-nephrology care.Kidney Int · PMID 33276867
- ADDIKD (2025) — Integrating International Consensus Guidelines for Anticancer Drug Dosing in Kidney Dysfunction (ADDIKD) into everyday practiceProvides GRADE-based, drug-specific dose-adjustment recommendations for anticancer agents in kidney dysfunction (illustrated for methotrexate, cisplatin, carboplatin and nivolumab); the recommendations build on Part 1's standardised CKD-EPI eGFR assessment rather than Cockcroft-Gault creatinine clearance.EClinicalMedicine · PMID 40290844
- ADDIKD (2025) — Aligning kidney function assessment in patients with cancer to global practices in internal medicineThree consensus recommendations: assess kidney function by GFR (measured GFR or CKD-EPI eGFR), classify it using KDIGO categories, and use this uniform approach to dose anticancer drugs — moving cancer medicine away from Cockcroft-Gault estimated creatinine clearance.EClinicalMedicine · PMID 40290845
- ADDIKD (2025) — A methodology for determining dosing recommendations for anticancer drugs in patients with reduced kidney functionEstablishes that, where RCT evidence is lacking, anticancer drug dosing recommendations in kidney dysfunction should be derived by critically appraising observational literature via GRADE combined with structured international multidisciplinary consensus voting.EClinicalMedicine · PMID 40290846
- KDIGO (2013) — Diagnosis, evaluation, and management of acute kidney injury: a KDIGO summary (Part 1)Defines/stages AKI by serum creatinine and urine output; emphasizes avoiding nephrotoxins, maintaining euvolemia/perfusion, dose-adjusting drugs to kidney function, and monitoring high-risk patients — the framework applied to nephrotoxic anti-cancer agents.Crit Care · PMID 23394211
- KDIGO (2024) — Executive summary of the KDIGO 2024 Clinical Practice Guideline for the Evaluation and Management of Chronic Kidney Disease: known knowns and known unknownsEvaluate and risk-stratify CKD, manage to delay progression and its complications, and practise explicit medication management and drug stewardship — the framework the atlas's G1–G5 eGFR banding and every renal dose-adjustment recommendation sit inside. Because the guideline excludes dialysis and transplant recipients by its own statement of scope, its recommendations do not carry to those settings, where this atlas's dialyzability and post-transplant guidance rests on other sources.Kidney Int · PMID 38519239
- KDIGO (2021) — Executive summary of the KDIGO 2021 Guideline for the Management of Glomerular DiseasesProvides the staging/treatment framework for drug-associated glomerular lesions (e.g., bisphosphonate- and interferon-related collapsing FSGS, VEGF-inhibitor podocytopathy/proteinuria), including immunosuppression and supportive RAAS-blockade strategies.Kidney Int · PMID 34556300
- KDIGO (2024) — Executive summary of the KDIGO 2024 Clinical Practice Guideline for the Management of ANCA-Associated VasculitisUpdates immunosuppressive induction (rituximab/cyclophosphamide), incorporates avacopan and lower-dose or glucocorticoid-sparing regimens — the management framework for drug- and checkpoint-inhibitor-associated ANCA/pauci-immune glomerulonephritis.Kidney Int · PMID 38388147
- KDIGO (2024) — Executive summary of the KDIGO 2024 Clinical Practice Guideline for the Management of Lupus NephritisUpdates first-line lupus nephritis therapy to combination immunosuppression with the addition of belimumab or a calcineurin inhibitor (voclosporin) — informs management of immune-complex/lupus-like glomerulonephritis encountered with immunotherapy.Kidney Int · PMID 38182299
- KDIGO (2025) — Executive summary of the KDIGO 2025 Clinical Practice Guideline for the Management of Immunoglobulin A Nephropathy (IgAN) and Immunoglobulin A Vasculitis (IgAV)Encourages liberal kidney biopsy and stricter proteinuria control (<0.5 g/d, ideally <0.3 g/d) with RAAS blockers, SGLT2 inhibitors, and targeted-release budesonide — the framework for IgA-dominant glomerular lesions, including those triggered by immune-modulating cancer therapy.Kidney Int · PMID 40975525
References
6 peer-reviewed references. Citation metadata via PubMed / NLM.
- 1.Capivasertib in Hormone Receptor-Positive Advanced Breast Cancer.Turner NC et al. · N Engl J Med · 2023 · PMID 37256976
- 2.Conventional Chemotherapy Nephrotoxicity.Gupta S et al. · Adv Chronic Kidney Dis · 2021 · PMID 35190107
- 3.Renal Side Effects of Novel Molecular Targeted Oncologic Agents.Fenoglio R et al. · G Ital Nefrol · 2023 · PMID 38007829
- 4.Current Trends in Anti-Cancer Molecular Targeted Therapies: Renal Complications and Their Histological Features.Tonooka A et al. · J Nippon Med Sch · 2021 · PMID 34840210
- 5.Drug-induced rise in serum creatinine: cystatin C to the rescue? Evidence, pitfalls and knowledge gaps.Van Regemorter E et al. · Eur J Intern Med · 2025 · PMID 41224604
- 6.Management of euvolemic hyponatremia attributed to SIADH in the hospital setting.Peri A et al. · Minerva Endocrinol · 2014 · PMID 24513602
Case reports & series (2)
The weakest rung of clinical evidence — single-patient and small-series reports, strongest first. Each carries a heuristic strength grade (A Strong / B Moderate / C Limited) inferred from its abstract and journal, not a formal appraisal. Weigh well below the primary references above.
- C1.[C · Limited]Capivasertib-Induced Refractory Hyperglycemia in a Nondiabetic Patient With Metastatic Breast Cancer.Darapu H et al. · AACE Endocrinol Diabetes · 2026 · PMID 41938274
- C2.[C · Limited][A Case of Drug‒Induced Tubulointerstitial Nephritis Caused by Capivasertib Therapy].Takemae M et al. · Gan To Kagaku Ryoho · 2025 · PMID 41047780