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NCT04278144

A First-in-human Study Using BDC-1001 as a Single Agent and in Combination With Nivolumab in Advanced HER2-Expressing Solid Tumors

Version 20 to 21 · Bolt Biotherapeutics, Inc.

Patch inspector

Version 20 to 21

40 operations 6 path groups ctgov_internal_history
ClinicalTrials.gov
Severity is deterministic uncalibrated triage metadata, not validated review priority. Operation-level severity is inferred from deterministic path rules. Rule matches shown per operation are approximate previews (they skip the pipeline's suppression passes); the authoritative classification is the stored event record.
Plain-language summary

Manual review pending.

Rules fired
arms_or_interventions_changedesign_info_changeprimary_outcome_any_changesecondary_outcome_any_change
Value signals

None recorded.

Provenance
Source
ctgov_internal_history
Fetched
2026-06-18 19:11:07+00
Raw hash
2d117a7a0a86a20096be56c2c9f854dedc40ee7f3a68920d65f37e5e8e586c09
Payload
Source URL
Primary outcomes Outcome measures that define the trial's primary evidence target. Triage: Critical 6 ops
replace /protocolSection/outcomesModule/primaryOutcomes/0/description
Triage: Critical
Primary Outcome Change Operation 16
Matched rules
  • primary_outcome_any_change Any add/remove/replace under primary outcome measures is critical review priority.
Before
Escalation period only
After
Escalation period
replace /protocolSection/outcomesModule/primaryOutcomes/1/description
Triage: Critical
Primary Outcome Change Operation 17
Matched rules
  • primary_outcome_any_change Any add/remove/replace under primary outcome measures is critical review priority.
Before
Escalation period only
After
Escalation period
replace /protocolSection/outcomesModule/primaryOutcomes/2/description
Triage: Critical
Primary Outcome Change Operation 18
Matched rules
  • primary_outcome_any_change Any add/remove/replace under primary outcome measures is critical review priority.
Before
Escalation period only
After
Escalation period
replace /protocolSection/outcomesModule/primaryOutcomes/3/description
Triage: Critical
Primary Outcome Change Operation 19
Matched rules
  • primary_outcome_any_change Any add/remove/replace under primary outcome measures is critical review priority.
Before
Escalation period only
After
Escalation period
replace /protocolSection/outcomesModule/primaryOutcomes/4/measure
Triage: Critical
Primary Outcome Change Operation 20
Matched rules
  • primary_outcome_any_change Any add/remove/replace under primary outcome measures is critical review priority.
Before
Overall response rate (ORR) of confirmed complete or partial responses (CR, PR)
After
Objective response rate (ORR) of confirmed complete or partial responses (CR, PR)
replace /protocolSection/outcomesModule/primaryOutcomes/4/description
Triage: Critical
Primary Outcome Change Operation 21
Matched rules
  • primary_outcome_any_change Any add/remove/replace under primary outcome measures is critical review priority.
Before
Expansion period only
After
Expansion period
Design Trial model, phase, allocation, masking, arms, or interventions. Triage: High 7 ops
replace /protocolSection/designModule/designInfo/interventionModelDescription
Triage: High
Design Change Operation 9
Matched rules
  • design_info_change Design information changes can alter allocation, masking, model, or purpose and need review.
Before
Multiple ascending dose and dose-expansion of BDC-1001 administered as a single agent or in combination with pembrolizumab.
After
Multiple ascending dose and dose-expansion of BDC-1001 administered as a single agent or in combination with nivolumab.
replace /protocolSection/armsInterventionsModule/armGroups/1/label
Triage: High
Arm Intervention Change Operation 10
Matched rules
  • arms_or_interventions_change Arms or interventions changes can alter treatment/comparator structure.
Before
Combination BDC-1001 plus pembrolizumab
After
Combination BDC-1001 plus nivolumab
replace /protocolSection/armsInterventionsModule/armGroups/1/interventionNames/1
Triage: High
Arm Intervention Change Operation 11
Matched rules
  • arms_or_interventions_change Arms or interventions changes can alter treatment/comparator structure.
Before
Drug: Pembrolizumab
After
Drug: Nivolumab
replace /protocolSection/armsInterventionsModule/interventions/0/armGroupLabels/0
Triage: High
Arm Intervention Change Operation 12
Matched rules
  • arms_or_interventions_change Arms or interventions changes can alter treatment/comparator structure.
Before
Combination BDC-1001 plus pembrolizumab
After
Combination BDC-1001 plus nivolumab
replace /protocolSection/armsInterventionsModule/interventions/1/name
Triage: High
Arm Intervention Change Operation 13
Matched rules
  • arms_or_interventions_change Arms or interventions changes can alter treatment/comparator structure.
Before
Pembrolizumab
After
Nivolumab
replace /protocolSection/armsInterventionsModule/interventions/1/armGroupLabels/0
Triage: High
Arm Intervention Change Operation 14
Matched rules
  • arms_or_interventions_change Arms or interventions changes can alter treatment/comparator structure.
Before
Combination BDC-1001 plus pembrolizumab
After
Combination BDC-1001 plus nivolumab
replace /protocolSection/armsInterventionsModule/interventions/1/otherNames/0
Triage: High
Arm Intervention Change Operation 15
Matched rules
  • arms_or_interventions_change Arms or interventions changes can alter treatment/comparator structure.
Before
Keytruda
After
Opdivo
Secondary outcomes Additional endpoints and outcome descriptions. Triage: High 18 ops
replace /protocolSection/outcomesModule/secondaryOutcomes/0/measure
Triage: High
Secondary Outcome Change Operation 22
Matched rules
  • secondary_outcome_any_change Any add/remove/replace under secondary outcome measures is high review priority.
Before
PK (Cmax) of BDC-1001 as monotherapy and in combination with pembrolizumab
After
PK (Cmax) of BDC-1001 as a single agent and in combination with nivolumab
replace /protocolSection/outcomesModule/secondaryOutcomes/1/measure
Triage: High
Secondary Outcome Change Operation 23
Matched rules
  • secondary_outcome_any_change Any add/remove/replace under secondary outcome measures is high review priority.
Before
PK (Cmin) of BDC-1001 as monotherapy and in combination with pembrolizumab
After
PK (Cmin) of BDC-1001 as a single agent and in combination with nivolumab
replace /protocolSection/outcomesModule/secondaryOutcomes/2/measure
Triage: High
Secondary Outcome Change Operation 24
Matched rules
  • secondary_outcome_any_change Any add/remove/replace under secondary outcome measures is high review priority.
Before
PK (AUC) of BDC-1001 as monotherapy and in combination with pembrolizumab
After
PK (AUC0-t) of BDC-1001 as a single agent and in combination with nivolumab
replace /protocolSection/outcomesModule/secondaryOutcomes/2/description
Triage: High
Secondary Outcome Change Operation 25
Matched rules
  • secondary_outcome_any_change Any add/remove/replace under secondary outcome measures is high review priority.
Before
Escalation and expansion periods
After
Escalation period
replace /protocolSection/outcomesModule/secondaryOutcomes/3/measure
Triage: High
Secondary Outcome Change Operation 26
Matched rules
  • secondary_outcome_any_change Any add/remove/replace under secondary outcome measures is high review priority.
Before
PK (CL) of BDC-1001 as monotherapy and in combination with pembrolizumab
After
PK (AUC0-inf) of BDC-1001 as a single agent and in combination with nivolumab
replace /protocolSection/outcomesModule/secondaryOutcomes/3/description
Triage: High
Secondary Outcome Change Operation 27
Matched rules
  • secondary_outcome_any_change Any add/remove/replace under secondary outcome measures is high review priority.
Before
Escalation and expansion periods
After
Escalation period
replace /protocolSection/outcomesModule/secondaryOutcomes/4/measure
Triage: High
Secondary Outcome Change Operation 28
Matched rules
  • secondary_outcome_any_change Any add/remove/replace under secondary outcome measures is high review priority.
Before
PK (Vz) of BDC-1001 as monotherapy and in combination with pembrolizumab
After
PK (CL) of BDC-1001 as a single agent and in combination with nivolumab
replace /protocolSection/outcomesModule/secondaryOutcomes/4/description
Triage: High
Secondary Outcome Change Operation 29
Matched rules
  • secondary_outcome_any_change Any add/remove/replace under secondary outcome measures is high review priority.
Before
Escalation and expansion periods
After
Escalation period
replace /protocolSection/outcomesModule/secondaryOutcomes/5/measure
Triage: High
Secondary Outcome Change Operation 30
Matched rules
  • secondary_outcome_any_change Any add/remove/replace under secondary outcome measures is high review priority.
Before
PK (t1/2) of BDC-1001 as monotherapy and in combination with pembrolizumab
After
PK (Vz) of BDC-1001 as a single agent and in combination with nivolumab
replace /protocolSection/outcomesModule/secondaryOutcomes/5/description
Triage: High
Secondary Outcome Change Operation 31
Matched rules
  • secondary_outcome_any_change Any add/remove/replace under secondary outcome measures is high review priority.
Before
Escalation and expansion periods
After
Escalation period
replace /protocolSection/outcomesModule/secondaryOutcomes/6/measure
Triage: High
Secondary Outcome Change Operation 32
Matched rules
  • secondary_outcome_any_change Any add/remove/replace under secondary outcome measures is high review priority.
Before
Overall response rate (ORR) using RECIST 1.1 and iRECIST
After
PK (t1/2) of BDC-1001 as a single agent and in combination with nivolumab
replace /protocolSection/outcomesModule/secondaryOutcomes/6/description
Triage: High
Secondary Outcome Change Operation 33
Matched rules
  • secondary_outcome_any_change Any add/remove/replace under secondary outcome measures is high review priority.
Before
Escalation period only
After
Escalation period
add /protocolSection/outcomesModule/secondaryOutcomes/7
Triage: High
Secondary Outcome Change Operation 34
Matched rules
  • secondary_outcome_any_change Any add/remove/replace under secondary outcome measures is high review priority.
After
{
  "measure": "Objective response rate (ORR) using RECIST 1.1",
  "timeFrame": "2 years",
  "description": "Escalation period"
}
replace /protocolSection/outcomesModule/secondaryOutcomes/11/measure
Triage: High
Secondary Outcome Change Operation 35
Matched rules
  • secondary_outcome_any_change Any add/remove/replace under secondary outcome measures is high review priority.
Before
Overall Survival (OS)
After
Incidence of anti-BDC-1001 antibodies
replace /protocolSection/outcomesModule/secondaryOutcomes/12/measure
Triage: High
Secondary Outcome Change Operation 36
Matched rules
  • secondary_outcome_any_change Any add/remove/replace under secondary outcome measures is high review priority.
Before
Incidence of anti-BDC-1001 antibodies and neutralizing antibodies to BDC-1001 or pembrolizumab
After
Incidence of adverse events (AEs) and serious adverse events (SAEs)
replace /protocolSection/outcomesModule/secondaryOutcomes/12/description
Triage: High
Secondary Outcome Change Operation 37
Matched rules
  • secondary_outcome_any_change Any add/remove/replace under secondary outcome measures is high review priority.
Before
Escalation and expansion periods
After
Expansion period
replace /protocolSection/outcomesModule/secondaryOutcomes/13/measure
Triage: High
Secondary Outcome Change Operation 38
Matched rules
  • secondary_outcome_any_change Any add/remove/replace under secondary outcome measures is high review priority.
Before
Incidence of adverse events (AEs) and serious adverse events (SAEs)
After
Incidence of potential-immune related toxicities
replace /protocolSection/outcomesModule/secondaryOutcomes/13/description
Triage: High
Secondary Outcome Change Operation 39
Matched rules
  • secondary_outcome_any_change Any add/remove/replace under secondary outcome measures is high review priority.
Before
Expansion period only
After
Expansion period
Contacts and locations Site, contact, and location updates that are usually operational. Triage: Uncategorized 1 ops
add /protocolSection/contactsLocationsModule/locations/0
Triage: Uncategorized
Uncategorized Operation 40
After
{
  "zip": "85711",
  "city": "Tucson",
  "state": "Arizona",
  "status": "RECRUITING",
  "country": "United States",
  "contacts": [
    {
      "name": "Stacey Kimbell, RN",
      "role": "CONTACT",
      "email": "stacey.kimbell@usoncology.com",
      "phone": "520-668-5678"
    }
  ],
  "facility": "Arizona Oncology",
  "geoPoint": {
    "lat": 32.22174,
    "lon": -110.92648
  }
}
Other registry fields Changes outside the current high-signal rule families. Triage: Uncategorized 5 ops
replace /protocolSection/statusModule/statusVerifiedDate
Triage: Uncategorized
Uncategorized Operation 3
Before
2021-08
After
2021-11
replace /protocolSection/statusModule/lastUpdateSubmitDate
Triage: Uncategorized
Uncategorized Operation 4
Before
2021-08-23
After
2021-11-05
replace /protocolSection/statusModule/lastUpdatePostDateStruct/date
Triage: Uncategorized
Uncategorized Operation 5
Before
2021-08-25
After
2021-11-11
replace /protocolSection/descriptionModule/briefSummary
Triage: Uncategorized
Uncategorized Operation 7
Before
A first-in-human study using BDC-1001 in HER2 expressing advanced malignancies
After
A first-in-human study using BDC-1001 as a single agent and in combination with nivolumab in HER2 expressing advanced malignancies
replace /protocolSection/descriptionModule/detailedDescription
Triage: Uncategorized
Uncategorized Operation 8
Before
This study has four parts.
Part 1 is a dose escalation of BDC-1001 as a single agent to determine the maximum tolerated dose (MTD), recommended Phase 2 dose (RP2D), or maximum protocol dose (MPD) recommended for Part 3. In Part 3, the selected dose will be administered as monotherapy to patients with selected advanced malignancies.
Part 2 is a dose escalation of BDC-1001 in combination with pembrolizumab to determine the maximum tolerated dose (MTD), recommended Phase 2 dose (RP2D), or maximum protocol dose (MPD) recommended for Part 4. In Part 4, the selected dose will be administered in combination with pembrolizumab to patients with selected advanced malignancies.
After
This study has four parts.
Part 1 is a dose escalation of BDC-1001 as a single agent to determine the maximum tolerated dose (MTD), recommended Phase 2 dose (RP2D), or maximum protocol dose (MPD) recommended for Part 3. In Part 3, the selected dose will be administered as monotherapy to patients with selected advanced malignancies.
Part 2 is a dose escalation of BDC-1001 in combination with nivolumab to determine the maximum tolerated dose (MTD), recommended Phase 2 dose (RP2D), or maximum protocol dose (MPD) recommended for Part 4. In Part 4, the selected dose will be administered in combination with nivolumab to patients with selected advanced malignancies.
Sponsor and administrative fields Sponsor, collaborator, oversight, or registry maintenance changes. Triage: Uncategorized 3 ops
replace /protocolSection/identificationModule/briefTitle
Triage: Uncategorized
Uncategorized Operation 1
Before
A First-in-human Study Using BDC-1001 in Advanced HER2-Expressing Solid Tumors
After
A First-in-human Study Using BDC-1001 as a Single Agent and in Combination With Nivolumab in Advanced HER2-Expressing Solid Tumors
replace /protocolSection/identificationModule/officialTitle
Triage: Uncategorized
Uncategorized Operation 2
Before
Phase 1/2 Study of BDC-1001 as a Single Agent and in Combination With Pembrolizumab in Patients With Advanced HER2-Expressing Solid Tumors
After
Phase 1/2 Study of BDC-1001 as a Single Agent and in Combination With Nivolumab in Patients With Advanced HER2-Expressing Solid Tumors
add /protocolSection/sponsorCollaboratorsModule/collaborators
Triage: Uncategorized
Uncategorized Operation 6
After
[
  {
    "name": "Bristol-Myers Squibb",
    "class": "INDUSTRY"
  }
]
Raw JSON Patch
[
  {
    "op": "replace",
    "path": "/protocolSection/identificationModule/briefTitle",
    "value": "A First-in-human Study Using BDC-1001 as a Single Agent and in Combination With Nivolumab in Advanced HER2-Expressing Solid Tumors"
  },
  {
    "op": "replace",
    "path": "/protocolSection/identificationModule/officialTitle",
    "value": "Phase 1/2 Study of BDC-1001 as a Single Agent and in Combination With Nivolumab in Patients With Advanced HER2-Expressing Solid Tumors"
  },
  {
    "op": "replace",
    "path": "/protocolSection/statusModule/statusVerifiedDate",
    "value": "2021-11"
  },
  {
    "op": "replace",
    "path": "/protocolSection/statusModule/lastUpdateSubmitDate",
    "value": "2021-11-05"
  },
  {
    "op": "replace",
    "path": "/protocolSection/statusModule/lastUpdatePostDateStruct/date",
    "value": "2021-11-11"
  },
  {
    "op": "add",
    "path": "/protocolSection/sponsorCollaboratorsModule/collaborators",
    "value": [
      {
        "name": "Bristol-Myers Squibb",
        "class": "INDUSTRY"
      }
    ]
  },
  {
    "op": "replace",
    "path": "/protocolSection/descriptionModule/briefSummary",
    "value": "A first-in-human study using BDC-1001 as a single agent and in combination with nivolumab in HER2 expressing advanced malignancies"
  },
  {
    "op": "replace",
    "path": "/protocolSection/descriptionModule/detailedDescription",
    "value": "This study has four parts.\nPart 1 is a dose escalation of BDC-1001 as a single agent to determine the maximum tolerated dose (MTD), recommended Phase 2 dose (RP2D), or maximum protocol dose (MPD) recommended for Part 3. In Part 3, the selected dose will be administered as monotherapy to patients with selected advanced malignancies.\nPart 2 is a dose escalation of BDC-1001 in combination with nivolumab to determine the maximum tolerated dose (MTD), recommended Phase 2 dose (RP2D), or maximum protocol dose (MPD) recommended for Part 4. In Part 4, the selected dose will be administered in combination with nivolumab to patients with selected advanced malignancies."
  },
  {
    "op": "replace",
    "path": "/protocolSection/designModule/designInfo/interventionModelDescription",
    "value": "Multiple ascending dose and dose-expansion of BDC-1001 administered as a single agent or in combination with nivolumab."
  },
  {
    "op": "replace",
    "path": "/protocolSection/armsInterventionsModule/armGroups/1/label",
    "value": "Combination BDC-1001 plus nivolumab"
  },
  {
    "op": "replace",
    "path": "/protocolSection/armsInterventionsModule/armGroups/1/interventionNames/1",
    "value": "Drug: Nivolumab"
  },
  {
    "op": "replace",
    "path": "/protocolSection/armsInterventionsModule/interventions/0/armGroupLabels/0",
    "value": "Combination BDC-1001 plus nivolumab"
  },
  {
    "op": "replace",
    "path": "/protocolSection/armsInterventionsModule/interventions/1/name",
    "value": "Nivolumab"
  },
  {
    "op": "replace",
    "path": "/protocolSection/armsInterventionsModule/interventions/1/armGroupLabels/0",
    "value": "Combination BDC-1001 plus nivolumab"
  },
  {
    "op": "replace",
    "path": "/protocolSection/armsInterventionsModule/interventions/1/otherNames/0",
    "value": "Opdivo"
  },
  {
    "op": "replace",
    "path": "/protocolSection/outcomesModule/primaryOutcomes/0/description",
    "value": "Escalation period"
  },
  {
    "op": "replace",
    "path": "/protocolSection/outcomesModule/primaryOutcomes/1/description",
    "value": "Escalation period"
  },
  {
    "op": "replace",
    "path": "/protocolSection/outcomesModule/primaryOutcomes/2/description",
    "value": "Escalation period"
  },
  {
    "op": "replace",
    "path": "/protocolSection/outcomesModule/primaryOutcomes/3/description",
    "value": "Escalation period"
  },
  {
    "op": "replace",
    "path": "/protocolSection/outcomesModule/primaryOutcomes/4/measure",
    "value": "Objective response rate (ORR) of confirmed complete or partial responses (CR, PR)"
  },
  {
    "op": "replace",
    "path": "/protocolSection/outcomesModule/primaryOutcomes/4/description",
    "value": "Expansion period"
  },
  {
    "op": "replace",
    "path": "/protocolSection/outcomesModule/secondaryOutcomes/0/measure",
    "value": "PK (Cmax) of BDC-1001 as a single agent and in combination with nivolumab"
  },
  {
    "op": "replace",
    "path": "/protocolSection/outcomesModule/secondaryOutcomes/1/measure",
    "value": "PK (Cmin) of BDC-1001 as a single agent and in combination with nivolumab"
  },
  {
    "op": "replace",
    "path": "/protocolSection/outcomesModule/secondaryOutcomes/2/measure",
    "value": "PK (AUC0-t) of BDC-1001 as a single agent and in combination with nivolumab"
  },
  {
    "op": "replace",
    "path": "/protocolSection/outcomesModule/secondaryOutcomes/2/description",
    "value": "Escalation period"
  },
  {
    "op": "replace",
    "path": "/protocolSection/outcomesModule/secondaryOutcomes/3/measure",
    "value": "PK (AUC0-inf) of BDC-1001 as a single agent and in combination with nivolumab"
  },
  {
    "op": "replace",
    "path": "/protocolSection/outcomesModule/secondaryOutcomes/3/description",
    "value": "Escalation period"
  },
  {
    "op": "replace",
    "path": "/protocolSection/outcomesModule/secondaryOutcomes/4/measure",
    "value": "PK (CL) of BDC-1001 as a single agent and in combination with nivolumab"
  },
  {
    "op": "replace",
    "path": "/protocolSection/outcomesModule/secondaryOutcomes/4/description",
    "value": "Escalation period"
  },
  {
    "op": "replace",
    "path": "/protocolSection/outcomesModule/secondaryOutcomes/5/measure",
    "value": "PK (Vz) of BDC-1001 as a single agent and in combination with nivolumab"
  },
  {
    "op": "replace",
    "path": "/protocolSection/outcomesModule/secondaryOutcomes/5/description",
    "value": "Escalation period"
  },
  {
    "op": "replace",
    "path": "/protocolSection/outcomesModule/secondaryOutcomes/6/measure",
    "value": "PK (t1/2) of BDC-1001 as a single agent and in combination with nivolumab"
  },
  {
    "op": "replace",
    "path": "/protocolSection/outcomesModule/secondaryOutcomes/6/description",
    "value": "Escalation period"
  },
  {
    "op": "add",
    "path": "/protocolSection/outcomesModule/secondaryOutcomes/7",
    "value": {
      "measure": "Objective response rate (ORR) using RECIST 1.1",
      "timeFrame": "2 years",
      "description": "Escalation period"
    }
  },
  {
    "op": "replace",
    "path": "/protocolSection/outcomesModule/secondaryOutcomes/11/measure",
    "value": "Incidence of anti-BDC-1001 antibodies"
  },
  {
    "op": "replace",
    "path": "/protocolSection/outcomesModule/secondaryOutcomes/12/measure",
    "value": "Incidence of adverse events (AEs) and serious adverse events (SAEs)"
  },
  {
    "op": "replace",
    "path": "/protocolSection/outcomesModule/secondaryOutcomes/12/description",
    "value": "Expansion period"
  },
  {
    "op": "replace",
    "path": "/protocolSection/outcomesModule/secondaryOutcomes/13/measure",
    "value": "Incidence of potential-immune related toxicities"
  },
  {
    "op": "replace",
    "path": "/protocolSection/outcomesModule/secondaryOutcomes/13/description",
    "value": "Expansion period"
  },
  {
    "op": "add",
    "path": "/protocolSection/contactsLocationsModule/locations/0",
    "value": {
      "zip": "85711",
      "city": "Tucson",
      "state": "Arizona",
      "status": "RECRUITING",
      "country": "United States",
      "contacts": [
        {
          "name": "Stacey Kimbell, RN",
          "role": "CONTACT",
          "email": "stacey.kimbell@usoncology.com",
          "phone": "520-668-5678"
        }
      ],
      "facility": "Arizona Oncology",
      "geoPoint": {
        "lat": 32.22174,
        "lon": -110.92648
      }
    }
  }
]