SphingoTec launches IVD Test for Kidney Function Biomarker penKid® on Nexus IB10 POCT Platform
- sphingotec launches a CE-marked point-of-care IVD assay for Proenkephalin (penKid®), the company‘s proprietary biomarker for real-time assessment of kidney function in critical care settings
- IB10 sphingotest® penKid® runs on sphingotec's automated Nexus IB10 point-of-care platform and quantitatively measures levels of penKid® directly in whole blood samples
- penKid® is a functional kidney biomarker reflecting the actual glomerular filtration rate and thus allows monitoring of renal function in real-time
- penKid® enables earlier prediction and more precise monitoring of acute kidney injury than the current standard-of-care
Hennigsdorf/Berlin, Germany, January 13, 2020
- Diagnostics company SphingoTec GmbH ("sphingotec", Hennigsdorf near Berlin, Germany) today announced the launch of its IB10 sphingotest® penKid®, a CE-IVD-marked point-of-care test for Proenkephalin (penKid®), the biomarker that allows real-time assessment of kidney function with a simple blood test. The test is made available on the company’s rapid point-of-care platform Nexus IB10 that uses whole blood samples without any pre-processing, requires less than three minutes hands-on-time, delivers test results after 20 minutes and can be flexibly deployed in laboratories or near-patient settings such as intensive care units (ICUs) and Emergency Departments (EDs).
In studies on more than 30,000 patients admitted to ICUs and EDs, penKid® has been demonstrated to be a real-time surrogate biomarker for glomerular filtration rate[1], the gold standard to assess kidney function. In contrast to other markers, penKid® is an early predictor of worsening and improving kidney function independently from co-morbidities and inflammation[2,3].
penKid® as a functional kidney biomarker has been demonstrated to provide significant clinical utility in numerous critical care settings:
– penKid® blood levels at admission to ICUs and EDs can identify patients at a high risk to develop acute kidney injury (AKI) as elevated blood levels of penKid® indicate kidney dysfunction in critically ill patients much earlier than the current standard of care4.
– penKid® blood levels during hospitalization can be used for real-time monitoring of kidney function. In critical care conditions (such as sepsis, acute heart failure) or after the administration of nephrotoxic drugs, which trigger kidney damage, elevated blood levels of penKid® reflect compromised kidney function. The normalization of kidney function is rapidly mirrored by decreasing levels of penKid®. Hence, penKid® allows for individualized dosing of medicines with nephrotoxic side-effects.
– penKid® blood levels at discharge identify patients who have low levels of this biomarker that can be safely discharged from the hospital while elevated biomarker levels identify patients with sublinical AKI5 that require further attention.
Worldwide AKI is affecting 13 million patients and puts other 26 million at risk. In the ICUs, 1 out of 3 patients will develop AKI6.
Dr. Andreas Bergmann, CEO and founder of sphingotec commented: "Testing and monitoring of blood levels of Proenkephalin with our IB10 sphingotest® penKid® allows not only for the stratification of patients at risk for acute kidney injury at admission to the hospital but also facilitates the monitoring of kidney function in real-time throughout the entire patient care cycle. We strongly believe that making penKid® testing available on a rapid point-of-care platform has a unique potential to enable timely therapy decision by physicians at ICUs and EDs and thereby improve patient outcomes.”
The IB10 sphingotest® penKid® will be made available at the end of January 2020 to the critical care community for further clinical evaluation. The assay is commercialized in Europe and other regions that accept CE-IVD certification through sphingotec’s network of distribution partners for the Nexus IB10 platform, together with a broad menu of standard tests for acute and critical care.
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References
1. Donato L. et al., (2018): Analytical performance of an immunoassay to measure proenkephalin, Clin Biochem., doi: 10.1016/j.clinbiochem.2018.05.010
2. Emmens JE et al. (2019): Proenkephalin, an opoid system surrogate marker, as a novel comprehensive renal marker in heart failure, Circ. Haeart Fail., doi: 10.1161/CIRCHEARTFAILURE.118.005544
3. Gayat E. et al, (2018) Back-to-back comparison of penKID with NephroCheck® to predict acute kidney injury at admission in intensive care unit, Critical Care, doi: 10.1186/s13054-018-1945-9
4. Caironi P. et al. (2018): Circulating proenkephalin, acute kidney injury, and its improvement in patients with severe sepsis or shock, Clin.Chem., doi 10.1373/clinchem.2018.288068
5. Rosenqvist, M. (2019): Proenkephalin A 119–159 (penKid) – a novel biomarker for acute kidney injury in sepsis: an observational study, doi: 10.1186/s12873-019-0283-9
6. Ponce, D. (2016): Acute kidney injury: risk factors and management challenges in developing countries, Int J Nephrol Renovasc Dis., doi: 10.2147/IJNRD.S104209
About sphingotec
SphingoTec GmbH ("sphingotec"; Hennigsdorf near Berlin, Germany) develops and markets innovative in vitro diagnostic (IVD) tests for novel and proprietary biomarkers for the diagnosis, prediction and monitoring of acute medical conditions, such as sepsis, acute heart failure, circulatory shock, and acute kidney injury in order to support patient management and provide guidance for treatment strategies. sphingotec's proprietary biomarker portfolio includes bioactive adrenomedullin (bio-ADM®), a unique biomarker for real-time assessment of endothelial function in conditions like sepsis or congestive heart failure, Proenkephalin (penKid®), a unique biomarker for real-time assessment of kidney function, and Dipeptidyl Peptidase 3 (DPP3), a unique biomarker for cardio-renal pathway disruptions leading to acute organ dysfunction. In addition, sphingotec develops a portfolio of novel biomarkers, which predict the risks of developing obesity, breast cancer and cardiovascular diseases. IVD tests for sphingotec’s proprietary biomarkers are made available as sphingotest® microtiterplate tests as well as point-of-care tests on the Nexus IB10 immunoassay platform by sphingotec’s subsidiary Nexus Dx Inc. (San Diego, CA, USA) alongside a broad menu of IB10 tests for established biomarkers for acute and critical care.
About Nexus Dx Inc. and the IB10 Platform
Nexus Dx Inc., a wholly-owned subsidiary of sphingotec, headquartered in San Diego, CA, USA, is a global provider of a near patient testing system and advanced diagnostic solution. The company is improving patient care by providing the medical community with rapid and reliable information at the point of care (POC), delivering patient information when and where it is needed most. The company has invested over $160m to develop and market the IB10 analyzer system which, without the need for sample preparation, automatically separates plasma from whole blood with subsequent reliable and quantitative detection of biomarkers in the plasma by means of antibodies. With a hands-on-time of less than 3 minutes the easy-to-use system provides in only 20 minutes test results for biomarkers that are crucial in the management of critical care patients. The portfolio of IB10 assays includes tests for established critical care parameters such as Procalcitonin, Troponin I, CK-MB, Myoglobin, NT-proBNP, and D-Dimer as well as tests for sphingotec’s proprietary biomarkers such as DPP3, an assay for Dipeptidyl Peptidase 3, a unique and proprietary biomarker for cardio-renal pathway disruptions leading to acute organ dysfunction, and Proenkephalin (penKid®), a unique and proprietary biomarker for real-time assessment of kidney function. An IB10 assay for bioactive Adrenomedullin (bio-ADM®), a unique and proprietary biomarker for endothelial function is expected to be launched by mid-2020.
About penKid®
sphingotec’s proprietary biomarker Proenkephalin (penKid®) is a functional kidney biomarker that works in whole blood, is independent from comorbidities and inflammation and provides timely information about changes in kidney function. penKid® is a surrogate marker for the gold standard of glomerular filtration rate (GFR) and indicates two days earlier than the standard-of-care the development of acute kidney injury (AKI) in critically ill patients. These features enable physicians to predict, diagnose, and closely monitor worsening and improving kidney function in emergency departments and intensive care units.
In a prospective, real-world study of 1,436 critically ill ICU patients, proenkephalin A 119–159 (penKid) provided clinically relevant information across AKI severity and during kidney replacement therapy (KRT). PenKid addressed a key unmet need in KRT management by identifying, with greater precision than standard biomarkers, patients at high risk of KRT liberation failure – helping to avoid stopping therapy too early. The findings support a future role for penKid in helping to standardize one of the few intensive care processes where the need for better decision support is widely acknowledged and current tools remain insufficient. Hennigsdorf, Germany – August 27, 2026 – SphingoTec GmbH announces the publication of new real-world data on proenkephalin A 119–159 (penKid) in critically ill patients. The data, published in Annals of Intensive Care, add to the growing body of evidence supporting penKid as a functional biomarker for kidney function and help inform clinical decision-making in AKI and KRT (1). In a prospective observational study at Heidelberg University Hospital, penKid was measured in 1,436 critically ill patients, including 138 patients receiving KRT for liberation analyses. The findings showed that penKid rose with AKI severity and, unlike serum creatinine and urine output, distinguished stage 3 AKI patients with and without an acute KRT requirement. In contrast to serum creatinine, penKid also differentiated acute KRT patients from those with pre-existing kidney failure and on chronic hemodialysis prior ICU admission, even while KRT treatment was ongoing (1). The study further showed that penKid levels increased progressively from the start of KRT, while serum creatinine decreased under treatment. Following successful liberation from KRT, penKid declined, whereas higher levels were seen in cases of liberation failure. In multivariable analysis, penKid was the strongest independent predictor of liberation failure and outperformed serum creatinine. A penKid cut-off of ≥250 pmol/L provided more than 90% specificity for liberation failure (1). By identifying patients at high risk of unsuccessful liberation, penKid may help clinicians make KRT discontinuation decisions more objectively, reduce the risk of stopping therapy too early, and support more standardized decision-making across critical care settings. “These data are important because they address a real-world clinical problem: how to better assess kidney function and support KRT decisions when standard markers fall short,” said Deborah Bergmann, CEO of SphingoTec. “penKid provides clinicians with an objective, real-time measurable parameter that may help support more informed and consistent kidney-related decisions in critical care.” Christian Nusshag, MD, Department of Nephrology, Heidelberg University Hospital, said: “Current markers often leave clinicians with an incomplete picture. Our findings suggest that penKid may help standardize decision-making by providing additional, actionable information on kidney integrity and recovery.” About penKid, scientific insights PenKid is a biomarker that enables real-time assessment of kidney function. Unlike conventional markers such as serum creatinine, penKid levels are not influenced by inflammation or other confounding factors like age or sex. Studies have shown that penKid allows earlier detection of AKI, predicting changes in serum creatinine up to 48 hours before conventional diagnostic criteria are met. This early detection capability is particularly valuable in critically ill patients, including those with sepsis or septic shock. Additionally, penKid has shown potential for monitoring renal recovery under KRT and could help predict successful liberation from KRT. About SphingoTec SphingoTec GmbH ("SphingoTec"; Hennigsdorf near Berlin, Germany) is a biomarker company focusing on the out-licensing of innovative critical care solutions for diagnosing, predicting, and monitoring acute medical conditions. SphingoTec develops its biomarkers to the commercial stage and partners with IVD companies to make them available on different IVD platforms. SphingoTec's proprietary biomarker portfolio includes Proenkephalin A 119-159 (penKid), a biomarker for the assessment of kidney function in critical diseases, and bioactive Adrenomedullin 1-52 (bio-ADM), a biomarker for the assessment of endothelial function in conditions like acute heart failure. Discover more on www.sphingotec.com References (1) Gabriel DC, Sauer P, Happel R, et al. Proenkephalin A for Assessing Kidney Integrity and Guiding KRT Liberation Decisions in Critically Ill Patients. Annals of Intensive Care. 2026. DOI: 10.1016/j.aicoj.2026.100113. Media Contact: Email: press@sphingotec.com Phone +49-3302-20565-0 SphingoTec GmbH Neuendorfstr. 15A 16761 Hennigsdorf, Germany
Hennigsdorf, Germany – August 19, 2026 – Over the coming months, SphingoTec will be present at a series of leading conferences in diagnostics and critical care medicine. These engagements reflect the company’s ongoing commitment to advancing biomarker-driven solutions that support earlier and more precise clinical decision-making in acute and critical care settings. The company’s conference schedule includes: DGAI (Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin), September 16-18, 2026, Kassel, Germany Kongress für Nephrologie 2026 (DGFN / Deutsche Gesellschaft für Nephrologie), October 08-11, 2026, Leipzig, Germany ESICM Lives, October 10-14, 2026, Lisbon, Portugal – SphingoTec will co-host a Scientific Symposium together with business partner Boditech, focusing on innovations in sepsis diagnostics. In parallel, new clinical data on penKid in a multicenter sepsis study will be presented as a poster at the ESICM congress. ASN Kidney Week 2026, Denver, CO, USA, October 22–25, 2026 – penKid takes center stage in the poster sessions with the abstract “Proenkephalin Predicts Severe AKI in High-Risk Patients” Medica, November 16-19, 2026, Düsseldorf, Germany – Focus on expanding SphingoTec’s international industry network and advancing partnering opportunities for its biomarker portfolio. DIVI (Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin), December 2-4, 2026, Hamburg, Germany “These events bring together clinicians, researchers, and industry partners who share our goal of improving outcomes for patients in critical care,” said Deborah Bergmann, CEO of SphingoTec. “By presenting our latest data and engaging in direct dialogue, we aim to strengthen collaborations that translate biomarker innovation into real clinical value.” About SphingoTec SphingoTec GmbH ("SphingoTec"; Hennigsdorf near Berlin, Germany) is a biomarker company focusing on the out-licensing of innovative critical care solutions for diagnosing, predicting, and monitoring acute medical conditions. SphingoTec develops its biomarkers to the commercial stage and partners with IVD companies to make them available on different IVD platforms. SphingoTec's proprietary biomarker portfolio includes Proenkephalin A 119-159 (penKid), a biomarker for the assessment of kidney function in critical diseases, and bioactive Adrenomedullin 1-52 (bio-ADM), a biomarker for the assessment of endothelial function in conditions like acute heart failure. Discover more on www.sphingotec.com Media Contact: Email: press@sphingotec.com Phone +49-3302-20565-0 SphingoTec GmbH Neuendorfstr. 15A 16761 Hennigsdorf, Germany