Reported Reactions

Drugs › CD38-directed cytolytic antibody

Brand name · Isatuximab

Sarclisa: adverse event reports filed with FDA

737 reports list it as a suspect or interacting product, 2020–2026. Class: CD38-directed cytolytic antibody.

737
reports as suspect product
0% of all reports · about 118 a year
144
reports, 12 months to June 2026
150 in the 12 months before
69.2%
marked serious by the reporter
89.1% across the class
12.3%
record death among outcomes, as reported
91 reports · not verified by FDA

Between April 2020 and June 2026, 737 adverse event reports received by FDA list the brand name Sarclisa (isatuximab) as a suspect or interacting product. Reports that mention it only as a concomitant medication (99) are left out of every figure here.

In the 12 months to June 2026, 144 reports listed it, close to the 150 of the 12 months before. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases. Over its reporting history that is about 118 reports a year and 0% of the 20,646,523 reports in the database, and 2% of the reports for the CD38-directed cytolytic antibody class. How many people take it is not in the data, so a count is not a rate of occurrence.

The MedDRA terms listed most often are infusion related reaction (7.2%), dyspnoea (6.5%) and off label use (6%). A report can list several reactions, so shares add to more than 100%; 180 different terms appear across these reports. Infusion related reaction is recorded in 7.2% of these reports, a larger share than in the median CD38-directed cytolytic antibody drug (4.4%).

69.2% of the reports are marked serious by the reporter (89.1% across the class); 12.3% record death among the outcomes and 23.3% record hospitalisation, as reported. 56.3% of the reports came from physicians, and the largest patient age group is 65 to 74 (24%). FDA states that "a causal relationship cannot be established between product and reactions listed in a report" and that for any given report "there is no certainty that a suspected drug caused the event."

Reports by month, five years

01428Jul 2021: 6Aug 2021: 10Sep 2021: 8Oct 2021: 9Nov 2021: 12Dec 2021: 102022Jan 2022: 5Feb 2022: 7Mar 2022: 7Apr 2022: 11May 2022: 8Jun 2022: 9Jul 2022: 9Aug 2022: 20Sep 2022: 23Oct 2022: 11Nov 2022: 11Dec 2022: 112023Jan 2023: 11Feb 2023: 10Mar 2023: 14Apr 2023: 10May 2023: 11Jun 2023: 8Jul 2023: 14Aug 2023: 16Sep 2023: 9Oct 2023: 17Nov 2023: 5Dec 2023: 102024Jan 2024: 7Feb 2024: 6Mar 2024: 9Apr 2024: 9May 2024: 13Jun 2024: 8Jul 2024: 10Aug 2024: 10Sep 2024: 7Oct 2024: 12Nov 2024: 13Dec 2024: 112025Jan 2025: 23Feb 2025: 12Mar 2025: 11Apr 2025: 14May 2025: 11Jun 2025: 16Jul 2025: 12Aug 2025: 10Sep 2025: 14Oct 2025: 10Nov 2025: 9Dec 2025: 82026Jan 2026: 9Feb 2026: 12Mar 2026: 12Apr 2026: 8May 2026: 28Jun 2026: 12

Reports by the month FDA received them. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases.

By year received

0751502020: 2720202021: 9720212022: 13220222023: 13520232024: 11520242025: 15020252026: 812026

2026 covers reports received through June 2026 only.

Reactions recorded in the reports

share of Sarclisa reports recording the termmedian drug in cd38-directed cytolytic antibody

  1. Infusion related reactiona reaction during or soon after an infusion7.2%53
  2. Dyspnoeashortness of breath6.5%48
  3. Off label useused for a purpose or in a way not on the label6%44
  4. Neutropenialow neutrophils, a type of white blood cell4.3%32
  5. Pyrexiafever4.2%31
  6. Pneumonialung infection3.5%26
  7. Diarrhoealoose or frequent stools3.4%25
  8. Thrombocytopenialow platelets3.4%25
  9. Anaemialow red blood cells3.3%24
  10. Disease progressionthe disease advanced3.1%23
  11. Deaththe patient died; cause not stated by this term3%22
  12. Coughcough2.8%21
  13. Weight increasedweight gain2.6%19
  14. Chillschills or shivering2.4%18
  15. Hypertensionhigh blood pressure2.4%18
  16. Weight decreasedweight loss2.3%17
  17. Acute kidney injurysudden loss of kidney function2.2%16
  18. Nauseafeeling sick2.2%16
  19. Renal impairmentreduced kidney function2.2%16
  20. Chest discomfortchest discomfort2%15
  21. Vomitingbeing sick1.8%13
  22. Deep vein thrombosisa blood clot in a deep vein1.6%12
  23. Fatiguetiredness1.6%12
  24. Tachycardiafast heart rate1.6%12
  25. Cardiac failureheart failure1.5%11
  26. Neuropathy peripheralnerve damage in hands or feet1.5%11
  27. Rashskin rash1.5%11

Top 30 of 180 MedDRA preferred terms recorded across these reports, with a plain-language gloss where one is available. One report can record several terms. The hollow bar is the median share across the 5 drugs in the cd38-directed cytolytic antibody class; it describes the reports, not the patients. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic."

Outcomes recorded

Death12.3%91
Life-threatening5.6%41
Hospitalisation (initial or prolonged)23.3%172
Disability2.4%18
Congenital anomaly0%0
Other serious57.9%427
Not serious30.8%227

Outcome flags as the reporter set them; a report can carry several, and "other serious" is FDA's own category for serious reports outside the named outcomes. Grey bar: all 37,241 reports in the class. FDA has not verified any outcome and states that the reports "cannot be used to estimate the incidence of these events."

Patients and reporters

Patient age

Under 20%0
2 to 110%0
12 to 170%0
18 to 442%15
45 to 6419.3%142
65 to 7424%177
75 and over17.6%130
Age not given37%273

Patient sex

Female33.9%250
Male41.7%307
Not given24.4%180

Who reported

Physician56.3%415
Pharmacist13.2%97
Other health professional17.1%126
Lawyer0%0
Consumer or non-health professional13.3%98
Not given0.1%1

Age and sex as stated in the report; the reporter's qualification is the primary source recorded by FDA. 42.9% of reports give the United States as the country of the event or reporter.

Reason for use recorded

Indication as recorded (MedDRA)ReportsShare
Plasma cell myeloma40254.5%
Plasma cell myeloma refractory547.3%
Plasma cell myeloma in remission40.5%
Acute lymphocytic leukaemia30.4%
Neoplasm malignant20.3%
Plasmacytoma20.3%

The indication field is filled in by the reporter and is often blank; shares are of all 737 reports.

Drugs most often listed in the same reports

Drug (any role in the report)ReportsShare of Sarclisa reports
Dexamethasone28638.8%
Pomalidomide15020.4%
Kyprolis8211.1%
Lenalidomide658.8%
Carfilzomib648.7%
Bortezomib405.4%
Acyclovir395.3%
Revlimid364.9%
Velcade354.7%
Bactrim304.1%

Other products listed in reports where Sarclisa is a suspect product, whatever their own role. Co-listing means the two were recorded together; it says nothing about either product's part in the event. Only the 2,500 most-reported names are counted here.

In context

MeasureSarclisaCD38-directed cytolytic antibodyAll reports
Reports as suspect product73737,24120,646,523
Share of that pool—2%0%
Reports, latest 12 months144—1,332,454
Marked serious69.2%89.1%57.4%
Death recorded among outcomes, per 1,000 reports12313291
Hospitalisation recorded, per 1,000 reports233378213
Consumer-filed share13.3%9.7%45.8%
Top term, share of reportsInfusion related reaction 7.2%median 4.4%0.3%

Shares are of reports, not of patients treated. The number of people taking a product is not in the data, so none of these figures is a rate, and differences between columns reflect who takes a product, who reports and how long it has been sold. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic."

Other drugs in the cd38-directed cytolytic antibody class

DrugName typeReportsLatest 12 monthsMarked serious
Darzalexbrand16,6061,62387.1%
Daratumumabgeneric13,5111,47597%
Isatuximabgeneric4,31154597.8%
Darzalex Fasprobrand2,07636542.8%

Ordered by report count for navigation only. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic." A brand and its generic are separate rows because reporters name them separately.

Questions about Sarclisa reports

How many adverse event reports has FDA received for Sarclisa?

737 reports list Sarclisa as a suspect or interacting product in the openFDA FAERS release of 28 Sep 2026, covering reports received through June 2026. 144 of them arrived in the latest 12 months. Another 99 list it only as a concomitant medication.

What reactions are recorded in Sarclisa reports?

infusion related reaction (7.2%), dyspnoea (6.5%), off label use (6%), neutropenia (4.3%) and pyrexia (4.2%). These are MedDRA preferred terms coded from what the reporter described; a report can list several, and a term's presence is not a finding that Sarclisa was responsible.

How serious are the reports?

69.2% are marked serious by the reporter. Among the outcomes recorded, 12.3% of reports include death and 23.3% include hospitalisation. FDA has not verified these outcomes and states that the reports "cannot be used to estimate the incidence" of the events.

Who files these reports?

physician (56.3%), other health professional (17.1%) and consumer or non-health professional (13.3%). Most reports reach FDA through the manufacturer, which must forward reports it receives.

Are reports for Sarclisa rising?

144 reports in the 12 months to June 2026, close to the 150 of the 12 months before. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases. Counts also move with how many people take a product, its time on the market and publicity.

Do these reports show that Sarclisa was responsible for these reactions?

No. FDA states that "a causal relationship cannot be established between product and reactions listed in a report" and that for any given report "there is no certainty that a suspected drug caused the event." The reaction may relate to the condition being treated, to other medicines, or to something else.

Is this a list of the side effects of Sarclisa?

No. It is a count of what was reported to FDA. The adverse reactions observed in clinical studies are printed on the FDA-approved label, which a pharmacist or clinician can go through with you.

How do I report an adverse event?

Consumers and health professionals can report to FDA through MedWatch (Form FDA 3500 online, or 1-800-FDA-1088), or to the manufacturer, which must pass reports on. See the guide on how to report.

Where this comes from. Counts are built from the openFDA Drug Adverse Event (FAERS) bulk export released 28 Sep 2026, which holds reports FDA received through 30 Jun 2026. Drug names are as reported, resolved to the brand or generic name on the FDA label where openFDA's harmonisation matched them; classes are the pharmacologic class (EPC) from the label and the National Drug Code Directory of 17 Sep 2026. A report counts here when it lists Sarclisa as a suspect or interacting product; reports listing it only as a concomitant medication (99) are excluded. No report narrative, lot number, patient detail or reporter identity is published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.

Drug data (FAERS) through 30 Jun 2026; device data (MAUDE) through 31 Aug 2026. Not medical advice.