CAR-T Cell Therapy

Prerenal / Hemodynamic AKI — representative incidence ~20% (5–33% range across studies).

AKI ~5–33% across cohorts (commonly ~10–30%), mostly mild and reversible.

Source: Gutgarts et al., Biol Blood Marrow Transplant 2020; Kanbay et al., Clin Kidney J 2024

Reported injury signatures: Prerenal / Hemodynamic AKI, Acute Tubular Necrosis, Crystal / Obstructive Nephropathy.

1. Prerenal / Hemodynamic AKIPrimary~10%AKI in 10% (any grade) and 5% (grade >=2) of 399 CD19 CAR-T-treated NHL patients; pre-renal/hemodynamic causes predominant (72%), linked to cytokine release syndrome, neurotoxicity, low albumin and high IL-6/TNF-alpha. Progression to CKD rare.
2. Acute Tubular NecrosisSecondaryIntrinsic (ischemic/toxic) tubular injury is the minority pattern of CAR-T AKI; pre-renal hemodynamic causes dominate (72% of cases).
3. Crystal / Obstructive NephropathyRare

Acute (~1–7 days) — AKI clusters in the CRS window — the first days to weeks after infusion.

• Grade ≥3 CRS
• Lower baseline GFR
• High tumor burden / elevated LDH
• IV contrast

• Tumor-lysis prophylaxis
• CRS management (tocilizumab/steroids)

• Daily creatinine, urine output and volume status through the CRS window (roughly days 1-14 post-infusion)
• CRS and ICANS grading by ASTCT criteria
• Tumor-lysis labs (potassium, phosphate, uric acid, calcium) before and after infusion in high-burden disease
• Electrolytes and fluid balance during tocilizumab / vasopressor / IV-fluid management
• Trend to recovery — most CRS-associated AKI is reversible as CRS resolves

• ZUMA-1 (axicabtagene ciloleucel, N Engl J Med 2017) - pivotal large-B-cell lymphoma trial defining the CRS/ICANS profile that drives secondary AKI
• ELIANA (tisagenlecleucel, N Engl J Med 2018) - pediatric/young-adult B-ALL trial with frequent high-grade CRS and attendant renal/electrolyte derangement
• JULIET (tisagenlecleucel, N Engl J Med 2019) - DLBCL registrational trial
• KarMMa (idecabtagene vicleucel, N Engl J Med 2021) - BCMA CAR-T in multiple myeloma, a renally vulnerable population

• AKI tracks CRS severity - grade the CRS (ASTCT) and the kidney usually follows
• Most CAR-T AKI is reversible hemodynamic injury; prompt CRS control (tocilizumab, steroids, fluids/pressors) protects the kidney
• Screen for and pre-empt tumor lysis in high-burden disease - a second, crystal-mediated AKI mechanism distinct from CRS
• ESKD/dialysis patients have received CAR-T successfully; renal impairment is not an absolute barrier but raises the supportive-care stakes

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.

• NCCN (2024) — NCCN Guidelines Insights: Management of Immunotherapy-Related Toxicities, Version 2.2024For mild MNTs, steroids such as dexamethasone 10 mg daily can be considered. For persistent, severe, or refractory MNTs, and if high circulating CAR T-cell levels are detected, chemotherapy such as cyclophosphamide can be considered.J Natl Compr Canc Netw · PMID 39536465
• ASCO (2021) — Management of Immune-Related Adverse Events in Patients Treated With Chimeric Antigen Receptor T-Cell Therapy: ASCO GuidelineGrade toxicities by ASTCT criteria; manage CRS with supportive care escalating to tocilizumab with or without corticosteroids, and manage moderate-to-severe ICANS with corticosteroids and supportive care given potential for rapid decline.J Clin Oncol · PMID 34724386
• TLS Expert Panel (2008) — Guidelines for the management of pediatric and adult tumor lysis syndrome: an evidence-based reviewPrevention is the best management: hydration plus prophylactic rasburicase for high-risk patients, hydration plus allopurinol or rasburicase for intermediate-risk, and monitoring for low-risk; for established TLS add aggressive hydration and diuresis plus allopurinol or rasburicase for hyperuricemia. Urinary alkalinization is NOT recommended.J Clin Oncol · PMID 18509186
• TLS Consensus Panel (2010) — Recommendations for the evaluation of risk and prophylaxis of tumour lysis syndrome (TLS) in adults and children with malignant diseases: an expert TLS panel consensusStratify each patient as low/intermediate/high TLS risk using tumor type, bulk/stage, proliferation rate, baseline laboratory TLS, and renal impairment/involvement, then match prophylaxis intensity (monitoring vs allopurinol vs rasburicase) to the assigned risk level.Br J Haematol · PMID 20331465
• BCSH (2015) — Guidelines for the management of tumour lysis syndrome in adults and children with haematological malignancies on behalf of the British Committee for Standards in HaematologyRisk-adapted prophylaxis and management of TLS in haematological malignancy: hydration with allopurinol for lower-risk and rasburicase for high-risk patients, with monitoring of electrolytes and renal function to prevent and treat AKI.Br J Haematol · PMID 25876990
• Cairo-Bishop (2004) — Tumour lysis syndrome: new therapeutic strategies and classificationDefines the Cairo-Bishop criteria distinguishing laboratory TLS (>=2 metabolic abnormalities: hyperuricemia, hyperkalemia, hyperphosphatemia, hypocalcemia within 3 days before to 7 days after therapy) from clinical TLS (laboratory TLS plus AKI, cardiac arrhythmia, or seizure), with a severity grading scheme adopted by subsequent guidelines.Br J Haematol · PMID 15384972
• ASTCT (2019) — ASTCT Consensus Grading for Cytokine Release Syndrome and Neurologic Toxicity Associated with Immune Effector CellsGrade CRS by fever, hypotension and hypoxia (grades 1-4) and grade ICANS using the ICE/encephalopathy score plus level of consciousness, seizures, motor findings and raised intracranial pressure/edema; this is the standard severity framework that triggers tocilizumab and corticosteroid escalation in CAR-T and bispecific antibody toxicity (the Lee 2019 consensus).Biol Blood Marrow Transplant · PMID 30592986
• 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