Combining WOKVAC vaccine with chemotherapy and targeted therapy for breast cancer treatment

Inclusion Criteria:

* Patients must be at least \>= 18 years of age
* Clinical stage I-III breast cancer, HER2+ (per American Society of Clinical Oncology \[ASCO\]/College of American Pathologists \[CAP\] guideline update, 2018), regardless of estrogen receptor (ER)/ progesterone receptor (PR) status and planning to undergo neoadjuvant therapy with either paclitaxel, trastuzumab, and pertuzumab (THP) or docetaxel, carboplatin, trastuzumab, and pertuzumab (TCHP)
* Patients who have received prior neoadjuvant chemotherapy are allowed but may only receive paclitaxel, trastuzumab, and pertuzumab for the duration the study
* Subjects with Eastern Cooperative Oncology Group (ECOG) performance status score of 0 or 1
* White blood cell (WBC) \>= 3000/mm\^3 (within 4 weeks of initiating study treatment)
* Lymphocyte count \>= 500/mm\^3 (within 4 weeks of initiating study treatment)
* Absolute neutrophil count (ANC) \>= 1,500/ uL (within 4 weeks of initiating study treatment)
* Platelets \>= 75,000/ uL (within 4 weeks of initiating study treatment)
* Total bilirubin =\< 1.5 x institutional upper limit of normal (ULN), except patients with Gilbert's syndrome in whom total bilirubin must be \< 3.0 mg/dL (within 4 weeks of initiating study treatment)
* Aspartate aminotransferase (AST)/alanine aminotransferase (ALT) =\< 3 x institutional upper limit of normal (ULN) (within 4 weeks of initiating study treatment)
* Creatinine =\< 2.0 mg/dL or creatinine clearance \> 30 ml/min (within 4 weeks of initiating study treatment)
* Left ventricular ejection fraction (LVEF) \>= lower limit of normal for institution performing the multi-gated acquisition (MUGA) or echocardiogram (ECHO) done within 3 months of initiating study treatment
* Female patients of child-bearing potential must agree to use dual methods of contraception and have a negative urine pregnancy test at screening, and male patients must use an effective barrier method of contraception if sexually active with a female of child-bearing potential. Acceptable methods of contraception are condoms with contraceptive foam, oral, implantable or injectable contraceptives, contraceptive patch, intrauterine device, diaphragm with spermicidal gel, or a sexual partner who is surgically sterilized or post-menopausal. For both male and female patients, effective methods of contraception must be used throughout the study and for three months following the last vaccine
* Ability to understand and willingness to sign a written informed consent document

Exclusion Criteria:

* Patients with any of the following cardiac conditions:

  * Symptomatic restrictive cardiomyopathy
  * Dilated cardiomyopathy
  * Unstable angina within 4 months prior to enrollment
  * New York Heart Association functional class III-IV heart failure on active treatment
  * Symptomatic pericardial effusion
* Uncontrolled autoimmune disease requiring active systemic treatment
* Known hypersensitivity reaction to the granulocyte-macrophage colony stimulating factor (GM-CSF) adjuvant; any known contra-indication to GM-CSF
* Pregnant or breast feeding
* Known human immunodeficiency virus (HIV)-positive
* History of uncontrolled diabetes
* Known current or a history of hepatitis B or C virus, including chronic and dormant states, unless disease has been treated and confirmed cleared
* Major surgery within the 4 weeks prior to initiation of study vaccine
* Current use of immunosuppressive agents or systemic corticosteroids. Topical, ocular, intra-articular, intranasal, inhalational corticosteroids (with minimal systemic absorption) are allowed. Patients who have received systemic corticosteroids =\< 30 days prior to starting study drug will be excluded

  \* NOTE: Steroids given as supportive care for the neoadjuvant chemotherapy regimens is allowable per standard of care
* Patient is currently enrolled in any other clinical protocol or investigational trial that involves administration of experimental therapy and/or therapeutic devices, or investigational drug
* Patients may not be receiving any other investigational agents