BTK inhibitor
Acalabrutinib
Calquence · Acala
BTK inhibitor · approved 2017 · 7 references
A more selective second-generation BTK inhibitor — less hypertension than ibrutinib, with tumor lysis the main renal risk.
- Signature injury
- Hypertension
- Severity
- Mild
- Reversibility
- Variable
- Onset
- Tumor lysis early (first cycle); hypertension over weeks–months.
Signature kidney injury & incidence
Hypertension — representative incidence ~15%.
Hypertension occurs but is less frequent than with ibrutinib (~15% vs ~26% in a matched real-world cohort; ELEVATE-RR confirmed lower hypertension and atrial fibrillation head-to-head). One single-center cardio-oncology cohort still found ~49% new/worsened hypertension by sensitive criteria. Tumor lysis is the principal route to AKI; direct nephrotoxicity is case-level.
Source: Majrashi et al., Pharmacol Res Perspect 2025 (HTN 15%)
Reported injury signatures: Prerenal / Hemodynamic AKI, Hypertension, Crystal / Obstructive Nephropathy.
Renal toxicity profile
- HypertensionPrimaryIn ELEVATE-RR (head-to-head vs ibrutinib in relapsed/refractory CLL, n=533), any-grade hypertension was markedly less frequent with acalabrutinib, with a ~2.8-fold lower exposure-adjusted incidence than ibrutinib — a milder BTK-inhibitor vascular signal.
- Prerenal / Hemodynamic AKIRare
- Crystal / Obstructive NephropathyRare
Onset timing & rechallenge
Acute (~1–7 days) — Tumor lysis early (first cycle); hypertension over weeks to months.
Mechanism of kidney injury
Clinical presentation
Management
Risk factors
- High tumor burden / bulky disease
- Pre-existing hypertension or CKD
- Volume depletion
- Prior arrhythmia, Black ancestry (for BTKi hypertension)
Prevention
- TLS risk stratification with hydration and urate-lowering therapy
- Blood-pressure monitoring and control
Renal dose adjustment
Dialyzability & ESKD dosing
Differential diagnosis
Monitoring
- Blood pressure periodically (lower but real hypertension risk)
- Tumor-lysis labs during early cytoreduction of bulky disease
Key trials & series
- Byrd et al., JCO 2021 — ELEVATE-RR, first randomized phase 3 head-to-head vs ibrutinib (lower hypertension and atrial fibrillation)
- Ghia et al., JCO 2020 — ASCEND registrational R/R CLL trial
- Majrashi et al., Pharmacol Res Perspect 2025 — real-world acalabrutinib 15% vs ibrutinib 26.3% hypertension
Clinical pearls
- Acalabrutinib's renal-relevant advantage over ibrutinib is real-world lower hypertension and atrial fibrillation (ELEVATE-RR) — but hypertension is still a class effect.
- The principal route to AKI is tumor lysis during rapid CLL/lymphoma debulking, not direct tubulotoxicity.
- Acid-reducing drugs blunt absorption of the original capsule formulation — an efficacy, not renal, pitfall worth remembering.
Anticancer mechanism
Note
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
7 peer-reviewed references. Citation metadata via PubMed / NLM.
- 1.Acalabrutinib Versus Ibrutinib in Previously Treated Chronic Lymphocytic Leukemia: Results of the First Randomized Phase III Trial.Byrd JC et al. · J Clin Oncol · 2021 · PMID 34310172
- 2.A Comparative Analysis of Cardiovascular Events Associated With Acalabrutinib Versus Ibrutinib in Chronic Lymphocytic Leukemia: Insights From a Global Federated Network.Majrashi A et al. · Pharmacol Res Perspect · 2025 · PMID 40341807
- 3.Hypertension and incident cardiovascular events after next-generation BTKi therapy initiation.Chen ST et al. · J Hematol Oncol · 2022 · PMID 35836241
- 4.ASCEND: Phase III, Randomized Trial of Acalabrutinib Versus Idelalisib Plus Rituximab or Bendamustine Plus Rituximab in Relapsed or Refractory Chronic Lymphocytic Leukemia.Ghia P et al. · J Clin Oncol · 2020 · PMID 32459600
- 5.Hypertension and Prohypertensive Antineoplastic Therapies in Cancer Patients.van Dorst DCH et al. · Circ Res · 2021 · PMID 33793337
- 6.Renal involvement in chronic lymphocytic leukemia.Wanchoo R et al. · Clin Kidney J · 2018 · PMID 30288263
- 7.Acute Kidney Injury Associated with Anticancer Therapies: Small Molecules and Targeted Therapies.Kala J et al. · Kidney360 · 2024 · PMID 39186376
Case reports & series (1)
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]Tumor Lysis Syndrome Triggered by Acalabrutinib in Chronic Lymphocytic Leukemia (CLL): Diagnostic and Therapeutic Implications.Fadi M et al. · Cureus · 2025 · PMID 41141198