ClinicalTrials.gg
CompletedNCT04691648Updated May 31, 2025

A Study to Assess the Safety of Xospata in Patients With Relapsed or Refractory Acute Myeloid Leukemia (AML) With FMS-Like Tyrosine Kinase 3 (FLT3) Mutation

An observational study in Acute Myeloid Leukemia With FMS-like Tyrosine Kinase (FLT3) Mutation, sponsored by Astellas Pharma Korea, Inc.. Completed at 10 sites in South Korea. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-05-31.

Primary conditionLeukemia, Myeloid, AcuteRegistry: RecurrenceReclassifiedWhy we changed it
Registry
Recurrence — the first condition term the registry derived for this study.
ClinicalTrials.gg
Leukemia, Myeloid, Acute
Why
  1. Recurrence describes something many studies share rather than a condition a study is about.
  2. The study's listed conditions name Leukemia, Myeloid, Acute.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by Astellas Pharma Korea, Inc. (part of Astellas Pharma Inc) · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
33
Ages
18 Years and older
Sex
All
01

Study summary

The objective of this study is to describe the observed safety profile of Xospata® 40 mg tablet when administered in patients with relapsed or refractory AML with FLT3 mutation in routine clinical practice in Korea.

Read the detailed description

This study is being mandated by Ministry of Food and Drug Safety (MFDS) as a part of the Korea-Risk Management Plan (K-RMP) to assess safety in patients with relapsed or refractory AML with FLT3 mutation in routine clinical practice in Korea. This study collects data for 54 months according to the purpose of this study in routine clinical practice as an observational study.

02

Conditions studied

  • Acute Myeloid Leukemia With FMS-like Tyrosine Kinase (FLT3) Mutation

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Keywords

  • Gilteritinib
  • Xospata
  • Relapsed or refractory Acute Myeloid Leukemia (AML)
03

In context

Leukemia, Myeloid, Acute Reclassified

3,667 studies on the registry are indexed under Leukemia, Myeloid, Acute; 816 are open to participants now.

This study's enrollment of 33 is below the median of 114 across 395 observational studies indexed under Leukemia, Myeloid, Acute.

Browse Leukemia, Myeloid, Acute studies →

Lead sponsor

Astellas Pharma Korea, Inc. is the lead sponsor of 19 studies on the registry; 3 are open to participants now.

Compared within Leukemia, Myeloid, Acute, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Recurrence. The counts are of registry records indexed under each term, refreshed daily. How we classify →

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Patients receiving Xospata® 40 mg tablet according to the drug label for 54 months from the start date of marketing in Korea.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patients who receive Xospata® 40 mg tablet according to the drug label approved at the time of marketing authorization in routine clinical practice.
  • Patients who voluntarily signed the written form.

Exclusion criteria

Exclusion Criteria:

  • Patients who meet the section 'Do not administer to the following patients' in the precautions for use given at the time of marketing authorization.
  • Patients who use the drug for an off-label purpose.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
33 participants (actual)
Patient registry
No

Groups and cohorts

  • Xospata

    Patients who receive Xospata® 40 mg tablet in routine clinical practice according to the drug label approved at the time of marketing authorization.

    Drug: Gilteritinib Exposure

Interventions

06

What researchers measure

Primary outcomes

  1. Number of participants with Adverse Drug Reactions (ADRs) related to important identified and/or potential risks

    An Adverse Drug Reaction refers to any unfavorable and unintended reaction occurring with a normal administration or use of the medicinal product that a causal relationship to the medicinal product cannot be ruled out. Number of ADRs related to important identified risks such as posterior reversible encephalopathy syndrome (PRES), QT prolongation, differentiation syndrome, and/or important potential risks such as pancreatitis, embryo-fetal lethality, suppressed fetal growth and teratogenicity, will be recorded.

    Time frame: Up to a maximum of 54 months (until 30 days after the last dose)

  2. Number of participants with serious ADRs related to important identified and/or potential risks

    An ADR refers to any unfavorable and unintended reaction occurring with a normal administration or use of the medicinal product that a causal relationship to the medicinal product cannot be ruled out. Number of ADRs related to important identified risks such as posterior reversible encephalopathy syndrome (PRES), QT prolongation, differentiation syndrome, and/or important potential risks such as pancreatitis, embryo-fetal lethality, suppressed fetal growth and teratogenicity, will be recorded. An ADR is considered "serious" if, in the view of either the investigator or sponsor, it results in any of the following outcomes: results in death, is life-threatening, results in persistent or significant disability/incapacity or substantial disruption of the ability to conduct normal life functions, results in congenital anomaly or birth defect, requires inpatient hospitalization or prolongation of hospitalization, or other medically important event.

    Time frame: Up to a maximum of 54 months (until 30 days after the last dose)

Secondary outcomes

  1. Number of participants with ADRs related to identified risks and considered not important

    An ADR refers to any unfavorable and unintended reaction occurring with a normal administration or use of the medicinal product that a causal relationship to the medicinal product cannot be ruled out. Number of ADRs related to identified risks but considered not important, such as other ADRs described by the Korean package insert, will be recorded. An ADR is considered "serious" if, in the view of either the investigator or Sponsor, it results in any of the following outcomes: results in death, is life-threatening, results in persistent or significant disability/incapacity or substantial disruption of the ability to conduct normal life functions, results in congenital anomaly or birth defect, requires inpatient hospitalization or prolongation of hospitalization, or other medically important event.

    Time frame: Up to a maximum of 54 months (until 30 days after the last dose)

  2. Number of participants with AEs

    An AE is defined as any untoward medical occurrence in a subject administered a study drug, and which does not necessarily have to have a causal relationship with this treatment. An AE is considered "serious" if, in the view of either the investigator or Sponsor, it results in any of the following outcomes: results in death, is life-threatening, results in persistent or significant disability/incapacity or substantial disruption of the ability to conduct normal life functions, results in congenital anomaly or birth defect, requires inpatient hospitalization or prolongation of hospitalization, or other medically important event. Causal relationship between the study drug is judged by medically qualified investigator either as certain, probable/likely, possible, unlikely, conditional/unclassified or unassessable/unclassifiable.

    Time frame: Up to a maximum of 54 months (until 30 days after the last dose)

07

Study locations

10 sites
  • Site KR82013
    Wŏnju, Gangwon-do 26426, South Korea
  • Site KR82006
    Goyang-si, Gyeonggi-do 10408, South Korea
  • Site KR82003
    Jeollanam-do, Hwasun-gun 58128, South Korea
  • Site KR82011
    Busan, 47392, South Korea
  • Site KR82010
    Daegu, 41944, South Korea
  • Site KR82001
    Incheon, 21565, South Korea
  • Site KR82004
    Seoul, 03080, South Korea
  • Site KR82005
    Seoul, 03722, South Korea
  • Site KR82009
    Seoul, 05505, South Korea
  • Site KR82007
    Seoul, 07985, South Korea
08

References and documents

Individual participant data

Plan to share: No — Access to anonymized individual participant level data will not be provided for this trial. Further details on Astellas' data sharing policy can be found at https://www.clinicaltrials.astellas.com/transparency/.

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Jun 2022 to primary completion in May 2025, 34 months.

Of 160 observational studies under Leukemia, Myeloid, Acute, half reached primary completion within 54 months of starting (the median), counting those still running; a quarter within 36 and three quarters within 154. This study's 34 months is below that.

How these figures are worked out, and which studies are left out of them.

Registered
Dec 30, 2020
First posted
Dec 31, 2020
StartActual
Jun 17, 2022
Primary completionActual
May 4, 2025
CompletionActual
May 4, 2025
Last update
May 31, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on May 31, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04691648
Responsible party
Sponsor
First posted
Dec 31, 2020
Start date
Jun 17, 2022
Primary completion
May 4, 2025
Completion
May 4, 2025
Last update
May 31, 2025

Study contacts

Astellas Pharma Korea, Inc.
study director · Astellas Pharma Korea, Inc.

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in May 2025. You cannot join it, but the record below documents what was studied.

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