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APX005M

Phase 2

Esophageal Cancer | Small molecule | Oncology |Pyxis Oncology, Inc.|Trials Updated: Jun 10, 2026

APX005M development status

Highest phase Phase 2
Registered trials 12 across 8 sponsors since Jun 2015

APX005M target and mechanism

ModalitySmall molecule

Also known as CD40 Agonistic Monoclonal Antibody, PYX-107, Sotigalimab

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLED
Total Trials6
Total Enrollment344

FDA Designations

No designations recorded

APX005M clinical trials

APX005M · 6 trials · 16 indications

Phase 2 3Phase 1 3
NCT04130854INNATE: Immunotherapy During Neoadjuvant Therapy for Rectal CancerLocally Advanced Rectal Adenocarcinoma
COMPLETED58 Analytics
NCT03719430APX005M and Doxorubicin in Advanced SarcomaSoft Tissue Sarcoma
COMPLETED27 Analytics
NCT03165994APX005M With Concurrent Chemoradiation for Resectable Esophageal and Gastroesophageal Junction CancersEsophageal Cancer
COMPLETED34 Analytics
PHASE2COMPLETED
INNATE: Immunotherapy During Neoadjuvant Therapy for Rectal Cancer
Locally Advanced Rectal AdenocarcinomaUnlock trial analytics
PHASE2COMPLETED
APX005M and Doxorubicin in Advanced Sarcoma
Soft Tissue SarcomaUnlock trial analytics
PHASE2COMPLETED
APX005M With Concurrent Chemoradiation for Resectable Esophageal and Gastroesophageal Junction Cancers
Esophageal CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

Pathological Complete Response Rate
At time of surgery

The primary objective of this study is to determine the pathologic complete response (pCR) rate of the combined treatment modality.

Objective Response Rate
6 months

The percentage of patients achieving a partial or complete response as measured by imaging assessments from study treatment

Pathologic Complete Response (pCR) Rate (%) Overall
At time of surgery, up to a maximum of 261 days

The pCR was defined as post-neoadjuvant pathologic tumour, node, metastasis (ypTNM) (after chemoRT; after surgery) with T0, N0 stages. pCR rate was defined as the percentage of participants who achieved a pCR at surgery, as assessed by the Investigator. * T0: No evidence of primary tumor. * N0: Cancer has not spread to nearby lymph nodes. An exact Clopper-Pearson lower 95% confidence limit was used to test the null hypothesis that the pCR rate is ≤30%.

pCR Rate (%) by Baseline Histologic Subgroup
At time of surgery, up to a maximum of 261 days

The pCR was defined as ypTNM (after chemoRT; after surgery) with T0, N0 stages. pCR rate was defined as the percentage of participants who achieved a pCR at surgery, as assessed by the Investigator. An exact Clopper-Pearson lower 95% confidence limit was used to test the null hypothesis that the pCR rate is ≤30%.

pCR Rate (%) by Baseline Tumor Location Subgroup
At time of surgery, up to a maximum of 261 days

The pCR was defined as ypTNM (after chemoRT; after surgery) with T0, N0 stages. pCR rate was defined as the percentage of participants who achieved a pCR at surgery, as assessed by the Investigator. An exact Clopper-Pearson lower 95% confidence limit was used to test the null hypothesis that the pCR rate is ≤30%.

pCR Rate (%) by Steroid Use Subgroup
At time of surgery, up to a maximum of 261 days

The pCR was defined as ypTNM (after chemoRT; after surgery) with T0, N0 stages. pCR rate was defined as the percentage of participants who achieved a pCR at surgery, as assessed by the Investigator. Steroids use: Yes was defined as participants with any steroid (ATC2 class corticosteroids for systemic use) from within 30 days of the first dose of sotigalimab to up to 7 days after the first dose and participants not fulfilling previous requirements are defined as Steroids use: No. An exact Clopper-Pearson lower 95% confidence limit was used to test the null hypothesis that the pCR rate is ≤30%.

pCR Rate (%) by Surgery Subgroup
At time of surgery, up to a maximum of 261 days

The pCR was defined as ypTNM (after chemoRT; after surgery) with T0, N0 stages. pCR rate was defined as the percentage of participants who achieved a pCR at surgery, as assessed by the Investigator. The subgroup of participants who had surgery before or at 16/17 weeks were defined as start of study treatment to surgery date from the surgical resection form, less than or equal to 17 weeks (119 days = 17 weeks \* 7 days) or participants who were scheduled to have surgery but had their procedure aborted due to progressive disease at the time of the procedure or immediately before and did not have surgery because of metastasis. The subgroup of participants who had surgery after Week 17 were defined as start of study treatment to surgery date from the surgical resection form, greater than 17 weeks. An exact Clopper-Pearson lower 95% confidence limit was used to test the null hypothesis that the pCR rate is ≤30%.

Safety and Tolerability Measured by Assessing Serious Adverse Events (SAEs)and Adverse Events (AEs)
From study enrollment up to 12 months.

AEs and SAEs will be examined with (National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) v 4.03.

Safety and Tolerability Measured by Eastern Cooperative Oncology Group(ECOG) Performance Status
From study enrollment up to 12 months.

This 5-point scale ranges from full functioning (0) to dead (5)

Number of Participants Experiencing Dose-limiting Toxicities (DLTs)
Up to 21 days following first dose of APX005M and nivolumab

All toxicities were graded according to the NCI-CTCAE version 4.03. DLT was defined as any of the following events attributed to APX005M and nivolumab combination: * Grade 4 hematologic toxicity lasting ≥ 7 days (except asymptomatic lymphopenia) * Grade 3 or 4 neutropenia with a single temperature of \>38.3◦ C (101◦ F) or a sustained temperature of ≥38◦ C (100.4◦ F) for more than one hour * Grade 4 thrombocytopenia or Grade ≥3 thrombocytopenia with signs or symptoms of bleeding or requiring platelet transfusion * Grade 4 non-hematologic toxicity * Grade 3 non-hematologic toxicity lasting \>3 days despite optimal supportive care * Any Grade ≥ 3 non-hematologic laboratory value if: medical intervention is required to treat the subject, abnormality leads to hospitalization, or abnormality persists for \>1 week * Failure to recover from a treatment-related AE to baseline or ≤ Grade 1 within 12 weeks of last dose of investigational product * Grade 5 toxicity.

Maximum Tolerated Dose (MTD) of APX005M + Nivolumab (Phase 1b)
Up to 21 days following first dose of APX005M and nivolumab

Establish the MTD dose of APX005M combined with 360 mg of nivolumab for which for which \< 33% of DLT- evaluable participants experience a DLT. In Phase 1b, the RP2D was based on the overall safety and tolerability of the combination of APX005M and nivolumab by testing increasing doses up to 0.3 mg/kg APX005M + nivolumab.

Phase 2 Evaluate the Objective Response Rate (ORR) by RECIST 1.1 and iRECIST in Each Cohort / Group
From start of the treatment (Day 1) until disease progression, withdrawal of consent, death, initiation of any anticancer therapy, lost to follow-up, or termination by the Sponsor, whichever comes first (for Phase 2: maximum up to 27 months)

ORR defined as the rate of patients who show as best overall response; either a complete response (CR) or a partial response (PR). The ORR can be evaluated by Response Evaluation Criteria In Solid Tumors (RECIST) v1.1. using computed tomography (CT) scans/magnetic resonance imaging (MRI). Per RECIST v1.1, for target lesions and assessed by imaging: Complete Response, (CR), Disappearance of all target lesions and nontarget (NT) lesions; Partial Response (PR), \>30% decrease in the sum of the longest diameter of target lesions and no PD in NT lesions or new lesions; Objective Response Rate (ORR)=CR + PR.

Incidence of dose limiting toxicities
Up to 28 days following first dose of APX005M

The rate of DLTs will be assessed in approximately 56 subjects. DLTs will include Grade 4 neutropenia, anemia, thrombocytopenia, Grade 3or 4 nausea, cytokine release syndrome and other Grade 3 non-hematological toxicity

Incidence of adverse events
Through up to approximately 4 weeks following last dose of APX005M

Incidence and severity of AEs and specific laboratory abnormalities graded according to NCI-CTCAE, v4.03

Secondary Endpoints

Overall Survival
3 years
Toxicity analysis
3 years
Disease free survival
3 years
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
APX005M on day 3 of RT & day 3 of cycles 1-5 of mFOLFOXEXPERIMENTALOn Day 3 of Cycles 1-5 of each mFOLFOX treatment, participants will receive another dose of APX005M. The sequence of administration of APX005M in combination with mFOLFOX. In Cycle 6, participants will receive only mFOLFOX. After completing the last planned dose of mFOLFOX, participants will be considered off-protocol directed therapy and undergo planned TME, per institutional standards, and proceed to the follow-up portion of this study.
Radiation Therapy 5Gy x 5 days, mFOLFOXACTIVE_COMPARATORParticipants randomized to Arm 2 will receive short-course RT and mFOLFOX regimen, except that participants will not receive any of the study drug. After completing the last planned dose of mFOLFOX, participants will be considered off-protocol directed therapy and undergo planned TME, per institutional standards, and proceed to the follow-up portion of this study.
Doxorubicin/APX005MEXPERIMENTALPatients will be treated with doxorubicin and APX005M in 21 day cycles. All patients receive the same treatment (there is no "placebo" arm). After completing 8 cycles of study treatment, patients without evidence of disease progression or unacceptable toxicity may continue treatment with APX005M alone. Doxorubicin will not be continued beyond cycle 8 due to the risk for cardiac toxicity from cumulative dosing.
APX005M With Standard of Care ChemoradiationEXPERIMENTALParticipants will receive standard of care chemoradiation, consisting of: * External beam radiation in daily fractions (28 fractions) from Weeks 1-6, administered once per day up to 5 days/week. * Carboplatin (area under the carboplatin plasma concentration versus time curve = 2) and paclitaxel (50 mg/m\^2) chemotherapy intravenously (IV) over 1 hour, once weekly, from Weeks 1-5. The participants also will receive concurrent 0.3 mg/kg APX005M IV over 1 hour, once weekly, on Weeks 1, 2, 4, and 6 (2-3 days after chemoradiation). Surgical resection of the tumor will be planned from Week 10 up to approximately Week 17, as indicated in the protocol amendment under which each participant is enrolled.
Cohort 1 Advanced Solid TumorsEXPERIMENTALCabiralizumab 4mg/kg plus APX005M 0.03 mg/kg administered in 14 day cycles.
Cohort 2 Advanced Solid TumorsEXPERIMENTALNivolumab 240 mg plus Cabiralizumab 4mg/kg plus APX005M 0.03 mg/kg administered in 14 day cycles.
Cohort 3 Advanced Solid TumorsEXPERIMENTALCabiralizumab 4mg/kg plus APX005M 0.1 mg/kg administered in 14 day cycles.
Cohort 4 Advanced Solid TumorsEXPERIMENTALNivolumab 240 mg plus Cabiralizumab 4mg/kg plus APX005M 0.1 mg/kg administered in 14 day cycles.
Cohort 5 Advanced Solid TumorsEXPERIMENTALCabiralizumab 4mg/kg plus APX005M 0.3 mg/kg administered in 14 day cycles.
Cohort 6 Advanced Solid TumorsEXPERIMENTALNivolumab 240 mg plus Cabiralizumab 4mg/kg plus APX005M 0.3 mg/kg administered in 14 day cycles.
Cohort 7 Advanced MelanomaEXPERIMENTALPatients will be treated at the estimated APX005M RP2D in combination with nivolumab 240 mg IV and cabiralizumab 4 mg/kg on day 1 of each 14-day cycle.
Cohort 8 NSCLCEXPERIMENTALPatients will be treated at the estimated APX005M RP2D in combination with nivolumab 240 mg IV and cabiralizumab 4 mg/kg on day 1 of each 14-day cycle.
Cohort 9 RCCEXPERIMENTALPatients will be treated at the estimated APX005M RP2D in combination with nivolumab 240 mg IV and cabiralizumab 4 mg/kg on day 1 of each 14-day cycle.
Phase 1b escalation 0.03 mg/kgEXPERIMENTALNon-small cell lung cancer (NSCLC) or metastatic melanoma APX005M 0.03 mg/kg and nivolumab 360 mg every 3 weeks
Phase 1b escalation 0.1 mg/kgEXPERIMENTALNon-small cell lung cancer (NSCLC) or metastatic melanoma APX005M 0.1 mg/kg and nivolumab 360 mg every 3 weeks
Phase 1b escalation 0.3 mg/kgEXPERIMENTALNon-small cell lung cancer (NSCLC) or metastatic melanoma APX005M 0.3 mg/kg and nivolumab 360 mg every 3 weeks
Phase 2 expansion Cohort 1EXPERIMENTALImmunotherapy naïve, metastatic or locally advanced NSCLC APX005M 0.3 mg/kg and nivolumab 360 mg every 3 weeks
Phase 2 expansion Cohort 2EXPERIMENTALMetastatic melanoma progressing during treatment with anti-PD-1/PD-L1 therapy APX005M 0.3 mg/kg and nivolumab 360 mg every 3 weeks
Phase 2 expansion Cohort 3EXPERIMENTALMetastatic or locally advanced NSCLC progressing during treatment with anti-PD-1/PD-L1: * Group A: best response of progressive disease or with stable disease \< 16 weeks * Group B: tumor response or with stable disease ≥ 16 weeks
APX005M every 3 weekEXPERIMENTALSubjects receive APX005M intravenously every 3 week until disease progression, unacceptable toxicity or death.
APX005M every 2 weekEXPERIMENTALSubjects receive APX005M intravenously every 2 week until disease progression, unacceptable toxicity or death.
APX005M every 1 weekEXPERIMENTALSubjects receive APX005M intravenously every 1 week until disease progression, unacceptable toxicity or death.

Interventions

NameTypeDescription
APX005M, mFOLFOX, and Radiation Therapy 5Gy x 5 daysDRUG1. APX005M 0.3mg/kg intravenously on day 3 of radiation and on day 3 of cycles 1-5 of mFOLFOX 2. Short course radiation therapy 5 Gy x 5 days 3. Oxaliplatin 85mg/m2 intravenous day 1 of each cycle 4. Leucovorin 400mg/m2 IV Day 1 of each cycle 5. 5-FU 2400 mg/m2 continuous infusion over 46 hours of each cycle
mFOLFOX and Radiation Therapy 5Gy x 5 daysDRUG1. Short course radiation therapy 5 Gy x 5 days 2. Oxaliplatin 85mg/m2 intravenous day 1 of each cycle 3. Leucovorin 400mg/m2 IV Day 1 of each cycle 4. 5-FU 2400 mg/m2 continuous infusion over 46 hours of each cycle
DoxorubicinDRUGDoxorubicin is an anthracycline antibiotic with antineoplastic activity 75 mg/m2 IV day 1 (21 day cycles)
APX005MDRUGAPX005M is a CD40 agonistic monoclonal antibody 0.3 mg/kg IV day 1 (21 day cycles)
Radiation TherapyRADIATIONRadiation therapy, total dose 5040cGy in 180cGy fractions
PaclitaxelDRUGPaclitaxel IV infusion
CarboplatinDRUGCarboplatin IV infusion
Surgical resection of tumorPROCEDURESurgical removal of the tumor will occur between weeks 10-17
CabiralizumabDRUGCabiralizumab is a humanized Immunoglobulin G (IgG) 4 monoclonal antibody directed against Colony stimulating factor 1 receptor (CSF1R). Cabiralizumab is administered by intravenous infusion.
NivolumabDRUGNivolumab is a humanized IgG4 monoclonal antibody directed against programmed cell death 1 (PD-1). Nivolumab is administered by intravenous infusion.
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Eligibility Criteria

Age Range18 Years to 99 Years
SexALL
Healthy VolunteersNo
Study Sites4

Inclusion Criteria: 1. At least 18 years of age. Both men and women and members of all races and ethnic groups will be included. 2. Willing and able to provide written informed consent 3. Pathologic diagnosis of rectal adenocarcinoma 4. Stage III or Stage II with at least 1 of the following high-ri...

Countries:United StatesSpain
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Frequently asked questions about APX005M

What is APX005M?

APX005M is an investigational oncology drug developed by Pyxis Oncology, Inc. (ticker PYXS). It has been studied in clinical trials for several cancer types, including advanced melanoma, non-small cell lung cancer, renal cell carcinoma, esophageal and gastroesophageal junction cancers, locally advanced rectal adenocarcinoma, and soft tissue sarcoma. It remains in clinical development and is not approved for commercial use.

What is APX005M used for in cancer?

APX005M has been evaluated in clinical trials across multiple solid tumor types, including advanced melanoma, non-small cell lung cancer, renal cell carcinoma, esophageal and gastroesophageal junction cancers, locally advanced rectal adenocarcinoma, and soft tissue sarcoma. These studies examined its use both as a single agent and in combination with other therapies. It is investigational and not approved for any indication.

Who makes APX005M?

APX005M is developed by Pyxis Oncology, Inc., which trades under the ticker symbol PYXS. The company has sponsored clinical trials of the drug in multiple cancer indications, including rectal cancer, soft tissue sarcoma, melanoma, lung cancer, renal cell carcinoma, and esophageal cancer.

What phase is APX005M in?

APX005M is in Phase 1 clinical development according to its overall development stage, though individual completed studies have been conducted at Phase 2. It is an investigational agent and has not been approved by the FDA for any indication. All listed trials of APX005M have been completed.

What clinical trials is APX005M in?

APX005M has been studied in completed trials including NCT04130854 (INNATE, neoadjuvant rectal cancer), NCT03719430 (with doxorubicin in advanced sarcoma), NCT03502330 (with nivolumab and cabiralizumab in advanced melanoma, NSCLC, or RCC), and NCT03165994 (with chemoradiation in esophageal and gastroesophageal junction cancers). All four trials are completed.

Is APX005M FDA approved?

No. APX005M is an investigational drug and has not been approved by the FDA. It remains in clinical development, with its trials conducted in Phase 1 and Phase 2 settings across several cancer types. All of its listed clinical trials have been completed, and no regulatory approval has been granted for any indication.