CytoSorbents Provides Update on the STAR-T Trial and Reports Final Independent Data and Safety Monitoring Board Recommendation PRINCETON, N.J.

CytoSorbents Provides Update on the STAR-T Trial

and Reports Final Independent Data and Safety Monitoring Board Recommendation

PRINCETON, N.J., December 28, 2023 -CytoSorbents

Corporation (NASDAQ: CTSO), a leader in the treatment of life-threatening conditions in the intensive care unit and cardiac surgery

using blood purification via its proprietary polymer adsorption technology, today announces an update on the initial data analysis of

primary safety and effectiveness endpoints and the final independent Data and Safety Monitoring Board ("DSMB") analysis for

the pivotal U.S. and Canadian STAR-T (Safe and Timely Antithrombotic Removal of Ticagrelor) randomized

STAR-T is a double-blind, randomized, controlled,

multi-center pivotal trial that investigated the ability of DrugSorb -ATR to reduce perioperative bleeding in 140 enrolled patients

on ticagrelor (Brilinta , Brilique - AstraZeneca) undergoing cardiothoracic surgery before completing the recommended washout

period. Patients were randomized in a 1:1 ratio to receive either DrugSorb-ATR or a sham device during cardiopulmonary bypass, with a

primary composite effectiveness endpoint measuring perioperative bleeding.

The independent DSMB met recently to perform the

final review of the full unblinded data on all 140 patients in the STAR-T trial and concluded there were no issues with device safety,

meeting the primary safety endpoint of the study. The Company has also performed the initial data analysis on the primary effectiveness

endpoint of STAR-T. Based on this analysis, the study did not meet the primary effectiveness endpoint in the overall patient population

that underwent different types of cardiac surgeries. However, the study did demonstrate evidence of reduced bleeding complications in

patients in the pre-specified isolated coronary artery bypass graft ("CABG") surgery population, representing more than 90%

of the overall study population.

The Company expects to complete the analysis of

the full trial results in the next several weeks. Pending this final analysis, the Company believes the safety and effectiveness data

from STAR-T may support the regulatory submission of DrugSorb-ATR to the U.S. FDA and Health Canada. Meanwhile, the Company had previously

submitted a promissory abstract to the American College of Cardiology 2024 conference, triggering a "silent" period for publicly

discussing detailed study results. If accepted, the full results of the STAR-T trial are expected to be presented next April 2024 in Atlanta.

Dr. Efthymios N. Deliargyris, Chief Medical Officer

of CytoSorbents stated, "We are encouraged that the use of the DrugSorb-ATR device in this high-risk population was deemed safe

by the independent DSMB. Although the primary effectiveness endpoint of the study was not met in

the overall population, we identified evidence of benefit of reduced bleeding complications in patients undergoing isolated CABG surgery,

including serious bleeding events. This suggests a favorable benefit-to-risk profile

in this population that represents the vast majority of ticagrelor-treated patients requiring cardiac surgery. Additional analyses are

ongoing and we look forward to sharing the detailed results at a major medical conference in the near future."

Kulinets, Senior Vice President of Global Regulatory of CytoSorbents stated, "In the next several

weeks, we aim to complete the full data analysis of the study that is intended to form the basis of anticipated regulatory submissions.

From a regulatory perspective, it is important that DrugSorb-ATR successfully met the primary safety endpoint of the study and has demonstrated

clinical evidence of effectiveness in the pre-specified isolated CABG subpopulation. These data are supported by the successful

real-world usage of CytoSorb for this same indication, as captured by our International STAR Registry and as seen in multiple world

markets including Europe, Latin America, Middle East, and others. Although we cannot predict how FDA will view our results, we

are encouraged that FDA has already granted Breakthrough Device Designation to DrugSorb-ATR for this application, recognizing the problem

as a major unmet medical need that causes significant patient morbidity and mortality and has no approved therapy in the U.S."

Ticagrelor is one of the leading anti-thrombotic

drugs used as part of dual-antiplatelet therapy in patients with acute coronary syndrome. However, up to 10% of these patients will need

to undergo CABG surgery and risk serious bleeding complications if the surgery is performed within the first few days from the last ticagrelor

dose. Waiting in the hospital to washout the drug over the span of 3-5 days is the only acceptable alternative, but comes with potential

clinical risk for complications while waiting, and high additional hospital costs. The goal of DrugSorb-ATR is to allow patients to safely

get the critical CABG surgery they need without requiring extensive drug washout.

DrugSorb-ATR has been previously granted U.S.

FDA Breakthrough Device Designation, acknowledging that perioperative bleeding in cardiac surgery due to ticagrelor is a major unmet

medical need. There are currently no approved or cleared therapies for this unmet need in the U.S. or Canada. Outside of the U.S. and

Canada, only CytoSorb is specifically approved for this indication. The Breakthrough

Devices Program provides for more effective treatment of life-threatening or irreversibly debilitating diseases or conditions

- in this case the need to reduce serious or life-threatening perioperative bleeding due to ticagrelor in emergent or urgent cardiac

surgery. With Breakthrough Designation, CytoSorbents intends to work with FDA to facilitate the regulatory review of DrugSorb-ATR,

while maintaining statutory standards of regulatory approval (e.g., 510(k), de novo 510(k), or premarket approval (PMA))

consistent with the Agency's mission to protect and promote public health.

About CytoSorbents Corporation (NASDAQ: CTSO)

CytoSorbents Corporation is a leader

in the treatment of life-threatening conditions in the intensive care unit and in cardiac surgery through blood purification. Its lead

product, CytoSorb , is approved in the European Union and distributed in 75 countries worldwide. It is an

extracorporeal cytokine adsorber that reduces "cytokine storm" or "cytokine release syndrome" in common critical

illnesses that can lead to massive inflammation, organ failure and patient death. In these diseases, the risk of death can be extremely

high, and there are few, if any, effective treatments. CytoSorb is also used during and after cardiothoracic surgery to remove antithrombotic

drugs and inflammatory mediators that can lead to postoperative complications, including severe bleeding and multiple organ failure.

At the end of Q3 2023, more than 221,000 CytoSorb devices had been used cumulatively. CytoSorb was originally launched in the European

Union under CE mark as the first cytokine adsorber. Additional CE mark extensions were granted for bilirubin and myoglobin removal in

clinical conditions such as liver disease and trauma, respectively, and for ticagrelor and rivaroxaban removal

in cardiothoracic surgery procedures. CytoSorb has also received FDA Emergency Use Authorization in the United States

for use in adult critically ill COVID-19 patients with impending or confirmed respiratory failure. The DrugSorb -ATR antithrombotic

removal system, based on the same polymer technology as CytoSorb, also received two FDA Breakthrough Device Designations,

one for the removal of ticagrelor and another for the removal of the direct oral anticoagulants (DOAC) apixaban

and rivaroxaban in a cardiopulmonary bypass circuit during urgent cardiothoracic procedures. The Company has completed the FDA-approved,

randomized, controlled STAR-T (Safe and Timely Antithrombotic Removal-Ticagrelor) study of 140 patients at approximately 30 centers in

U.S. and Canada to evaluate whether intraoperative use of DrugSorb-ATR can reduce the perioperative risk of bleeding in patients receiving

ticagrelor and undergoing cardiothoracic surgery. This pivotal study is intended to support U.S. FDA and Health Canada marketing approval

for DrugSorb-ATR in this application.

purification technologies are based on biocompatible, highly porous polymer beads that can actively remove toxic substances from blood

and other bodily fluids by pore capture and surface adsorption. Its technologies have received non-dilutive grant, contract, and other

funding of approximately $50 million from DARPA, the U.S. Department of Health and Human Services (HHS), the National Institutes

of Health (NIH), National Heart, Lung, and Blood Institute (NHLBI), the U.S. Army, the U.S. Air Force, U.S. Special Operations Command

(SOCOM), Air Force Material Command (USAF/AFMC), and others. The Company has numerous marketed products and products under development

based upon this unique blood purification technology protected by many issued U.S. and international patents and registered trademarks,

and multiple patent applications pending, including ECOS-300CY , CytoSorb-XL , HemoDefend-RBC , HemoDefend-BGA ,

VetResQ , K+ontrol , DrugSorb , ContrastSorb, and others. For

more information, please visit the Company's websites at www.cytosorbents.com and www.cytosorb.com or

Forward-Looking Statements

release includes forward-looking statements intended to qualify for the safe harbor from liability established by the Private Securities

Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to, statements about our plans, objectives,

future targets and outlooks for our business, statements about our preliminary analysis and expectations with respect to the STAR-T clinical

trial results and our expectations regarding the content and timing of sharing further detailed results in the future and are not historical

facts and typically are identified by use of terms such as "may," "should," "could," "expect,"

"plan," "anticipate," "believe," "estimate," "predict," "potential,"

"continue" and similar words, although some forward-looking statements are expressed differently. You should be aware that

the forward-looking statements in this press release represent management's current judgment and expectations, but our actual results,

events and performance could differ materially from those in the forward-looking statements. Factors which could cause or contribute to

such differences include, but are not limited to, the risks discussed in our Annual Report on Form 10-K, filed with the SEC on March 9,

2023, as updated by the risks reported in our Quarterly Reports on Form 10-Q, and in the press releases and other communications to shareholders

issued by us from time to time which attempt to advise interested parties of the risks and factors which may affect our business. We caution

you not to place undue reliance upon any such forward-looking statements. We undertake no obligation to publicly update or revise any

forward-looking statements, whether as a result of new information, future events, or otherwise, other than as required under the Federal

U.S. Company Contact:

305 College Road East