Less than 100 lines to talk to your Neo4j graph

talk_to_neo4j.js

require('dotenv').config()
const { Configuration, OpenAIApi } = require("openai");
const neo4j = require('neo4j-driver')
const driver = neo4j.driver(process.env.NEO4JURI, neo4j.auth.basic(process.env.NEO4JUSER, process.env.NEO4JPASSWORD))
const session = driver.session({ database: "biodb" })
const configuration = new Configuration({
    apiKey: process.env.OPENAI_API_KEY
});
const openai = new OpenAIApi(configuration);
let isConfidential = false;
const search = "What gene causes Osteosarcoma";
let answer = "";
async function tellme() {
    let training = `
#How many times did patient id_1 visit the ICU?
MATCH (p:Patient)-[:HAS_STAY]->(v:PatientUnitStay) WHERE p.patient_id =~ '(?i)id_1' RETURN COUNT(v)

#When did patient id_1 visit the ICU?
MATCH (p:Patient)-[:HAS_STAY]->(v:PatientUnitStay) WHERE p.patient_id =~ '(?i)id_1' RETURN v.hospitaldischargeyear

#Which drug treats COVID-19?; Which kind of compound treats COVID-19?
MATCH (c:Compound)-[:treats]->(d:Disease) WHERE d.name =~ '(?i)COVID-19' RETURN c.name

#Which pathogen causes COVID-19?; What is the disease agent for COVID-19?; Which organism causes COVID-19?
MATCH (o:Pathogen)-[:causes]->(d:Disease) WHERE d.name =~ '(?i)COVID-19' RETURN o.name

#Which gene causes Christianson syndrome?
MATCH (g:Gene)-[r1:associates]->(d:Disease) WHERE d.name =~ '(?i)Christianson syndrome' RETURN g.name

#Tell me something about the disease named "Christianson syndrome"
MATCH (d:Disease) WHERE d.name =~ '(?i)Christianson syndrome' RETURN d.description

#I have Dyspepsia, Hiccup and Edema. What can be the cause of this?
MATCH (s1:Symptom) <-[:presents]- (d:Disease) WHERE s1.name =~ '(?i)Dyspepsia'  MATCH (s2:Symptom) <-[:presents]- (d:Disease) WHERE s2.name =~ '(?i)Hiccup'  MATCH (s3:Symptom) <-[:presents]- (d:Disease) WHERE s3.name =~ '(?i)Edema' RETURN d.name

#what kinds of side effects do Doxepin have?
MATCH (d:Compound)-[:causes]->(s:\`Side Effect\`) WHERE d.name =~ '(?i)Doxepin' RETURN s.name

#what functions does the gene PCBD1 have?
MATCH (g:Gene)-[:participates]->(f:\`Molecular Function\`) WHERE g.name =~ '(?i)PCBD1' RETURN f.name

#which kinds of cancers can be found in frontal sinus?; Which tumors can you find in frontal sinus?
MATCH (d:Disease)-[:localizes]->(a:Anatomy) WHERE a.name =~ '(?i)frontal sinus' AND (d.name CONTAINS "cancer" OR d.disease_category = "Cancer") RETURN DISTINCT(d.name)

#`;

    let query = training + search + "\n"

    try {
        const response = await openai.createCompletion("davinci", {
            prompt: query,
            temperature: 0,
            max_tokens: 150,
            top_p: 1.0,
            frequency_penalty: 0.0,
            presence_penalty: 0.0,
            stop: ["#", ";"],
        });

        let cypher = response.data.choices[0].text;

        try {
            const result = await session.run(cypher)
            const records = result.records
            records.forEach(element => {
                answer += element.get(0) + ", "
            });
            answer = answer.slice(0, -2)

            // console.log("records", records)
        } finally {
            await session.close()
        }
        await driver.close()

    }
    catch (e) {
        console.error(e.message)
    }


    if (answer.startsWith("CONFIDENTIAL")) {
        isConfidential = true;
    }


    console.log(search, ": ", answer);
}
tellme();

Yes, you need a biomed database to fetch the data. See Hetionet for instance.
You also need a .env file with credentials, insert your OpenAI and Neo4j credentials like so:

NEO4JPASSWORD=xyz
NEO4JURI=bolt://localhost:7687
NEO4JUSER=neo4j
OPENAI_API_KEY=uvw