A Phase 1 interventional study of ICG318, BCMA-CD19-IL-15/IL-15 sushi Compound CAR-T in Inflammatory Myopathy, sponsored by iCell Gene Therapeutics. Recruiting at 1 site in China. Open to participants aged 18 Years to 60 Years. Per ClinicalTrials.gov, last updated 2026-07-20.
Sponsored by iCell Gene Therapeutics · Phase 1, Interventional, and Treatment
This single-arm, open-label, phase I trial evaluates the safety and tolerability of ICG318 CAR-T (BCMA-CD19-IL-15/IL15sushi cCAR T cells) in patients with refractory Idiopathic inflammatory myopathy (IIM).
Idiopathic inflammatory myopathy (IIM) is a group of chronic autoimmune diseases with the most common types in adults being dermatomyositis, immune-mediated necrotizing myopathy, polymyositis, and antisynthetase syndrome. IIM is driven by humoral immune cell dysfunction including B cells, plasma cells and long-lived plasma cells.
ICG318 CAR-T, the investigational agent in this clinical trial, is an armored, compound chimeric antigen receptor (cCAR) composed of two independently functioning CARs that target the CD19 and BCMA surface antigens on B cells and plasma/long-lived plasma cells, respectively.
This study is being conducted to evaluate the safety and tolerability of ICG318 CAR-T in patients with refractory IIM. A single dose of ICG318 CAR-T will be evaluated after cyclophosphamide lymphodepletion.
215 studies on the registry are indexed under Myositis; 100 are open to participants now.
This study's planned enrollment of 10 is below the median of 30 across 141 interventional studies indexed under Myositis.
Browse Myositis studies →iCell Gene Therapeutics is the lead sponsor of 17 studies on the registry; 7 are open to participants now.
Counted across the registry records on this site, refreshed daily.
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.
The diagnosis meets the criteria for IIM according to the 2017 EULAR/ACR criteria and is confirmed to be of the following subtype:
a. Dermatomyositis: i. Presence of Gottron's rash or sunspot rash; ii. At least one serological result is positive: anti-transcriptional mediator (TIF1-gamma/P155) antibody, anti-matrix protein 2 (NXP2/P140) antibody, anti-Mi2 antibody, anti-melanoma differentiation-associated gene 5 (MDA5) antibody, anti-small ubiquitin-like modifier-1 activator (SAE1) antibody and/or SAE2 antibody, anti-histyl-tRNA synthetase (Jo-1) antibody, anti-alanyl-tRNA synthetase (PL-12) antibody, anti-threonyl-tRNA synthetase (PL-7) antibody, anti-glycyl-tRNA synthetase (EJ) antibody, anti-leucyl-tRNA synthetase (0J) antibody; b. Immune-mediated necrotizing myopathy: i. No characteristic skin manifestations of dermatomyositis were observed (i.e. Gottron's rash or sun-facing rash); ii. Muscle weakness characterized by IIM (e.g., symmetrical proximal muscle weakness of the upper/lower limbs; or more pronounced weakness of the neck flexors than the neck extensors; or more pronounced proximal muscle weakness of the lower limbs than distal muscle weakness).
iii. At least one serological result must be positive: anti-human signal recognition particle (SRP) antibody, or trihydroxytrimethylcoenzyme A reductase (HMGCR) antibody; c. Antisynthetic enzyme syndrome: i. At least one of the following clinical manifestations must be present: Raynaud's phenomenon, arthritis, interstitial lung disease, fever (with no other cause of fever found), or technician's hand (thickened and cracked skin on the hands, especially the fingertips).
ii. At least one serological result is positive: anti-histyl-tRNA synthetase (Jo-1) antibody, anti-threonyl-tRNA synthetase (PL-7) antibody, anti-alanyl-tRNA synthetase (PL-12) antibody, anti-glycyl-tRNA synthetase (EJ) antibody, anti-leucyl-tRNA synthetase (OJ) antibody, anti-aspartyl-tRNA synthetase (KS) antibody, anti-phenylalanyl-tRNA synthetase (Zo) antibody, anti-glutamyl-tRNA synthetase (JS) antibody, anti-lysyl-tRNA synthetase (SC) antibody, anti-tyrosyl-tRNA synthetase (YRS) antibody;
Severity of enrollment met the following criteria:
Exclusion Criteria:
Patients with severe organ dysfunction:
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.
Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².
Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.
A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.
Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.
The New York Heart Association’s four classes of how much heart failure limits physical activity.
Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.
The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.
It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.
After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Relapsed and refractory
Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Corticosteroids (steroids)
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Immunosuppression
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ULN (upper limit of normal)
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Clinically significant
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
GFR and eGFR (kidney filtering)
GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².
Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Bilirubin
A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.
Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ALT and AST (liver enzymes)
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
LVEF (left ventricular ejection fraction)
The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
NYHA class (heart failure)
The New York Heart Association’s four classes of how much heart failure limits physical activity.
Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Absolute neutrophil count (ANC)
The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.
It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Platelets
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hemoglobin (Hb)
The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Cancer (malignancy)
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hepatitis B tests
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hepatitis C tests
Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.
After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
HIV
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Biological: ICG318, BCMA-CD19-IL-15/IL-15 sushi Compound CAR-T
Anti-BCMA, Anti-CD19 Compound CAR-T cells
Number of Adverse Events (AEs) after ICG318 CAR-T infusion.
Number of participants with AEs, Serious Adverse Events (SAEs), Treatment Emergent Adverse Events (TEAEs), Adverse Events of Special Interest (AESI), and Dose Limiting Toxicities (DLTs).
Time frame: Starting day 0 and up to 2 years after ICG318 CAR-T infusion.
Determine the recommended phase 2 dose (RP2D) regimen.
The protocol is based on cohort schema with dose escalation from 1×10\^6/kg.
Time frame: Starting day 0 and assessed 2 years after ICG318 CAR-T infusion.
The proportion of subjects who achieved drug-free remission.
Time frame: At 6 months (M), 12M, 24M after ICG318 CAR-T infusion.
Basic Metabolic Panel
Sodium, Chloride, Potassium, Bicarbonate, BUN, Creatinine, and Glucose levels
Time frame: Days 1-7, 10, 14, 21, and 28, Months 2, 3, 6, 9, 12, 18, 24 post-ICG318 CAR-T
Coagulation studies
PT/INR and aPTT
Time frame: Days 1-7, 10, 14, 21, and 28, Months 2, 3, 6, 9, 12, 18, 24 post-ICG318 CAR-T
Cytokine testing
IL-6 and TNF-alpha
Time frame: Days 1-7, 10, 14, 21, and 28, Months 2, 3, 6, 9, 12, 18, 24 post-ICG318 CAR-T
Manual Muscle Testing 8 (MMT8) score
Evaluation of muscle strength with MMT8
Time frame: Days 14, 28; Months 2, 3, 6, 9, 12, 18, 24 post-ICG318 CAR-T
Cutaneous Dermatomyositis Disease Area and Severity Index (CDASI)
Evaluation of skin pathology with CDASI rating
Time frame: Days 1-7, 10, 14, 21, and 28, Months 2, 3, 6, 9, 12, 18, 24 post-ICG318 CAR-T
Myositis Disease Activity Assessment Tool (MDAAT) score
Extra-muscular disease activity measured with MDAAT
Time frame: Days 1-7, 10, 14, 21, and 28, Months 2, 3, 6, 9, 12, 18, 24 post-ICG318 CAR-T
36-item short form survey (SF-36) score. 0 (worst health) and 100 (best health)
Patient reported quality of life using SF-36
Time frame: Days 1-7, 10, 14, 21, and 28, Months 2, 3, 6, 9, 12, 18, 24 post-ICG318 CAR-T
Creatinine kinase levels
Time frame: Days 1-7, 10, 14, 21, and 28, Months 2, 3, 6, 9, 12, 18, 24 post-ICG318 CAR-T
Lactate dehydrogenase levels
Time frame: Days 1-7, 10, 14, 21, and 28, Months 2, 3, 6, 9, 12, 18, 24 post-ICG318 CAR-T
Hydroxybutyrate dehydrogenase levels
Time frame: Days 1-7, 10, 14, 21, and 28, Months 2, 3, 6, 9, 12, 18, 24 post-ICG318 CAR-T
Transaminase levels
AST, ALT
Time frame: Days 1-7, 10, 14, 21, and 28, Months 2, 3, 6, 9, 12, 18, 24 post-ICG318 CAR-T
C-reactive protein
Time frame: Days 1-7, 10, 14, 21, and 28, Months 2, 3, 6, 9, 12, 18, 24 post-ICG318 CAR-T
Procalcitonin levels
Time frame: Days 1-7, 10, 14, 21, and 28, Months 2, 3, 6, 9, 12, 18, 24 post-ICG318 CAR-T
Ferritin levels
Time frame: Days 1-7, 10, 14, 21, and 28, Months 2, 3, 6, 9, 12, 18, 24 post-ICG318 CAR-T
Tmax
Time to maximum serum concentration of ICG318.
Time frame: Months 3, 6, 12, 24 after ICG318 CAR-T administration
Cmax
Time frame: Months 3, 6, 12, 24 after ICG318 CAR-T administration
AUC 0-28d
Time frame: Months 3, 6, 12, 24 after ICG318 CAR-T administration
AUC 0-∞
Time frame: Months 3, 6, 12, 24 after ICG318 CAR-T administration
Peripheral blood lymphocyte subsets (T, B, NK, CD4/CD8
Time frame: Days 1-7, 10, 14, 21, and 28, Months 2, 3, 6 post-ICG318 CAR-T
Anti-myositis antibody levels
(e.g. anti-Jo-1, anti-nuclear etc.)
Time frame: Days 14, 28 ; Months 2, 3, 6, 9, 12, 18, 24 post-ICG318.
Immunoglobulins
Time frame: Days 1-7, 10, 14, 21, and 28, Months 2, 3, 6, 9, 12, 18, 24 post-ICG318 CAR-T
Plan to share: No
No publications or documents are linked to this record.
Started Mar 2025 (actual). Primary completion is estimated for Dec 2027, 33 months after the start.
How these figures are worked out, and which studies are left out of them.
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